Traditional English pronunciation of Latin

The traditional English pronunciation of Latin, and Classical Greek words borrowed through Latin, is the way the Latin language was traditionally pronounced by speakers of English until the early 20th century. Although this pronunciation is no longer taught in Latin classes, it is still broadly used in the fields of biology, law, and medicine.
In the Middle Ages speakers of English, from Middle English onward, pronounced Latin not as the ancient Romans did, but in the way that had developed among speakers of French. This traditional pronunciation then became closely linked to the pronunciation of English, and as the pronunciation of English changed with time, the English pronunciation of Latin changed as well.
Until the beginning of the 19th century all English speakers used this pronunciation, including Roman Catholics for liturgical purposes. Following Catholic emancipation in Britain in 1829 and the subsequent Oxford Movement, newly converted Catholics preferred the Italianate pronunciation, which became the norm for the Catholic liturgy. Meanwhile, scholarly proposals were made for a reconstructed Classical pronunciation, close to the pronunciation used in the late Roman Republic and early Empire, and with a more transparent relationship between spelling and pronunciation.
One immediate audible difference between the pronunciations is in the treatment of vowels. The English pronunciation of Latin applied vowel sound changes which had occurred within English itself, where stressed vowels in a word became quite different from their unstressed counterpart. In the other two pronunciations of Latin, vowel sounds were not changed. Among consonants, for example, the treatment of the letter c followed by a front vowel was one clear distinction. That is, the name Cicero is pronounced in English as , in Ecclesiastical Latin as, and in restored Classical Latin as.
The competition between the three pronunciations grew towards the end of the 19th century.
By the beginning of the 20th century, however, a consensus for change had developed. The Classical Association, shortly after its foundation in 1903, put forward a detailed proposal for a reconstructed classical pronunciation. This was supported by other professional and learned bodies. Finally in February 1907 their proposal was officially recommended by the Board of Education. Adoption of the "new pronunciation" was a [|long], drawn-out process, but by the mid-20th century, classroom instruction in the traditional English pronunciation had ceased.

Illustrative survivals

The traditional pronunciation survives in academic and general English vocabulary:

In a very large body of words used every day: album, apex, area, asylum, axis, basis, bonus, camera, census, cinema, circus, crisis, dilemma, error, focus, genesis, genius, hypothesis, icon, insignia, item, junior, major, medium, minor, murmur, onus, panacea, podium, ratio, sector, stamina, terminus, trivia; as well as such common phrases as ad infinitum, et cetera, non sequitur, quid pro quo, status quo, vice versa, etc.
In academic vocabulary: campus, syllabus, curriculum, diploma, alumnus
In anatomical vocabulary: aorta, biceps, cranium, patella, penis, sinus, vertebra, vagina, etc.
In astronomical nomenclature, including the names of planets, moons, asteroids, stars and constellations, such as Mars, Io, Ceres, Sirius, Ursa Major, nova, nebula, though many of these are irregular
In many biblical names: Ananias, Cornelius, Felix, Jesus, Judas, Lydia, Nicodemus, Nicolas, Priscilla, Sergius, Silas, Titus, Zacharias, etc.
In a number of historical terms and names, particularly those associated with Greek or Roman culture and politics: augur, bacchanal, consul, fibula, lictor, prætor, toga, Augustus, Cæsar, Cicero, Diocletian, Hypatia, Plato, Socrates, Trajan, etc.
In legal terminology and phrases: affidavit, alibi, alias, de jure, obiter dictum, sub judice, subpoena, etc. In many cases Classical pronunciation is used, however.
In the specialized terminology of literary studies: codex, colophon, epitome, index, periphrasis, parenthesis, etc.
In some mathematical terms: calculus, parabola, hyperbola, isosceles, rhombus, vector, etc.
In medical terminology describing diseases, symptoms and treatments: anaesthesia, bacterium, coma, lumbago, mucus, nausea, ophthalmia, rabies, tetanus, virus, rigor mortis. etc.
In words and names from classical mythology: Achilles, Argus, Calliope, Gorgon, Myrmidon, Sphinx, etc.
In many place names: Carolina, Judæa, Annapolis, Dalmatia, Ithaca, Nicæa, Pennsylvania, Romania, Salina, Virginia, etc.
In some religious terms: Angelus, basilica, Magi, martyr, presbyter, etc.
In many saints' names: Athanasius, Eugenia, Eusebius, Ignatius, Irene, Januarius, Leo, Macarius, Marcella, Theophilus, etc.
In certain sporting terms: gymnasium, stadium, discus, pentathlon
In the taxonomic nomenclature of botany and zoology: ''phylum, genus, species, chrysanthemum, hibiscus, rhododendron, foetus, larva, ovum, pupa, chameleon, lemur, platypus''
Vowel length and stress

In most cases, the English pronunciation of Classical words and names is predictable from the orthography, as long as [vowel length|long and [|short] vowels] are distinguishable in the source. For Latin, Latinized Greek or for long versus short α, ι, υ Greek vowels, this means that macrons and breves must be used if the pronunciation is to be unambiguous. However, the conventions of biological nomenclature forbid the use of these diacritics, and in practice they are not found in astronomical names or in literature. Without this information, it may not be possible to ascertain the placement of stress, and therefore the pronunciation of the vowels in English.
Note that the following rules are generalizations, and that many names have well-established idiosyncratic pronunciations.

Stress placement

Latin stress is predictable. It falls on the penultimate syllable when that is "heavy", and on the antepenultimate syllable when the penult is "light".
In Greek, stress is not predictable, but it may be ignored when pronouncing Greek borrowings, as they have been filtered through Latin and have acquired the stress patterns of Latin words.
A syllable is "light" if it ends in a single short vowel. For example, a, ca, sca, scra are all light syllables for the purposes of Latin stress assignment.
Any other syllable is "heavy":

if it is closed by a consonant: an, can, scan, scran
if the vowel is long or a diphthong in Latin, or in the Latin transliteration of Greek: ā, cā, scā, scrā or æ, cæ, scæ, scræ.

Latin diphthongs may be written or, or. Long vowels are written with a macron: ā ē ī ō ū ȳ, though this is a modern convention. Greek long vowels are ει, η, ου, ω, sometimes ι, υ, and occasionally α. For example, Actaeon is pronounced or . A diaeresis indicates that the vowels do not form a diphthong: Arsinoë .
The importance of marking long vowels for Greek words can be illustrated with Ixion, from Greek Ἰξίων. As it is written, the English pronunciation might be expected to be *. However, length marking, Ixīōn, makes it clear that it should be pronounced .
When a consonant ends a word, or when more than a single consonant follows a vowel within a word, the syllable is closed and therefore heavy. The English letter j was originally an i, forming a diphthong with the preceding vowel, so it forces the stress just as æ, œ, z, and x do.

Exception: a consonant cluster of p, t, or c/k plus l or r is ambiguous. The preceding syllable was open in ordinary Latin. However, when a different stress placement was required by poetic meter, it could be treated as closed. Thus the name Chariclo could be syllabified as either cha-ri-klō, with an open penult and stress on the cha, or cha-rik-lō, with a closed penult and stress on the rik, so both and are acceptable pronunciations in English.
Secondary stress

If more than two syllables precede the stressed syllable, the same rules determine which is stressed. For example, in Cassiopeia, syllabified cas-si-o-pei-a, the penult pei/pē contains a long vowel/diphthong and is therefore stressed. The second syllable preceding the stress, si, is light, so the stress must fall one syllable further back, on cas. Therefore, the standard English pronunciation is .

Long and [|short vowels]

Whether a vowel letter is pronounced "long" in English or "short" is unrelated to the length of the original Latin or Greek vowel. Instead it depends on position and stress. A vowel followed by a consonant at the end of a word is short in English, except that final -es is always long, as in Pales . In the middle of a word, a vowel followed by more than one consonant is short, as in Hermippe , while a vowel with no following consonant is long. However, when a vowel is followed by a single consonant and then another vowel, it gets more complicated.
If the syllable is unstressed, it is open, and the vowel is often reduced to schwa.
If the penultimate syllable is stressed, it is open and the vowel long, as in Europa .
If any other syllable is stressed, it is closed and the vowel is short, as in Ganymede and Anaxagoras .
Regardless of position, stressed u'' stays long before a single consonant, as in Jupiter .

Exception: A stressed nonhigh vowel stays long before a single consonant followed by an or sound plus another vowel at the end of a word: Proteus , Demetrius . This is because, historically and regionally, in many of these words the e, i, y is pronounced and combines with the following syllable, so that the preceding syllable is penultimate and therefore open: .

Traditionally, English syllables have been described as 'open' when their vowel is long and they are followed by a single consonant followed by another vowel, and as 'closed' in the same environment when their vowel is short. However, it is debated how accurate this analysis is, as in English syllables tend to attract a following consonant, especially when they are stressed, so that all stressed syllables followed by a consonant are arguably 'closed'. Such following consonants are sometimes described as ambisyllabic. This effect is especially apparent in some dialects, such as RP, when the consonant in question is /r/, which affects the quality of the preceding vowel. None of this changes the patterns described in this article: The long-short distinction described above is maintained regardless. For example, the 'e' in Hera is long regardless of whether it is pronounced or in a particular dialect, or analyzed as open or as closed. American dictionaries tend to follow the former transcription, and British dictionaries the latter, so when the consonant 'r' is involved the rules for the English pronunciation of Latin words are more straightforward when using the conventions of American dictionaries.

Alphabet

Anglo-Latin includes all of the letters of the English alphabet except w, viz.: a b c d e f g h i j k l m n o p q r s t u v x y z. It differs from Classical Latin in distinguishing i from j and u from v.
In addition to these letters, the digraphs æ and œ may be used. These two digraphs respectively represent mergers of the letters ae and oe and are often written that way. However, since in Anglo-Latin both ae and oe represent a simple vowel, not a diphthong, the use of the single letters æ and œ better represents the reality of Anglo-Latin pronunciation.
Despite being written with two letters, the Greek sequences ch, ph, rh, th represent single sounds. The letters x and Greek z, on the other hand, are sequences of two sounds.

Conversion of Greek to Latin

Anglo-Latin includes a large amount of Greek vocabulary; in principle, any Greek noun or adjective can be converted into an Anglo-Latin word. There is a conventional set of equivalents between the letters of the Greek and Roman alphabets, which differs in some respects from the current mode of Romanizing Greek. This is laid out in the tables below:
Rh is used for Greek ρ at the beginnings of words, e.g. ῥόμβος > rhombus.
Rarely, k is used to represent Greek κ. In such cases it is always pronounced and never : e.g. σκελετός > skeleton not "sceleton".
Greek accent marks and breath marks, other than the "rough breathing", are entirely disregarded; the Greek pitch accent is superseded by a Latin stress accent, which is described [|below].
Frequently, but not universally, certain Greek nominative endings are changed to Latin ones that cannot be predicted from the tables above. Occasionally forms with both endings are found in Anglo-Latin, for instance Latinized hyperbola next to Greek hyperbole. The most usual equations are found below:
Examples:

Greek ἄγγελος > Latin angelus
Greek ἔλλειψις > Latin ellipsis
Greek μουσεῖον > Latin mūsēum
Greek μαίανδρος > Latin mæander
Greek χρυσάνθεμον > Latin chrȳsanthemum
Greek διάῤῥοια > Latin ''diarrhœa''
Consonants

Letters and sounds

The letters b, f, k, l, m, p, v and z have each only one sound, which corresponds to the equivalent IPA symbols.
The letter j has the single sound.
The letter r has a single sound, in rhotic dialects of English. In nonrhotic dialects, it varies according to placement in a syllable. At the beginning of a syllable, it is pronounced. At the end of a syllable, i.e. between a vowel and a consonant, or after a vowel at the end of a word, it is dropped—though not without, frequently, affecting the pronunciation of the previous vowel sound. If r occurs at the end of a word after a vowel, and the next word begins with a vowel, it is usually pronounced as the beginning of the first syllable of the next word. Rh and rrh are pronounced exactly like r and rr.
When followed by a vowel, the combinations qu and gu and su stand for,, and respectively.
The combination ph is pronounced.
The combination th is pronounced.
The combination ch is pronounced in all environments - although in Scottish pronunciation it is pronounced at the end of a syllable.
The letters c, d, g, h, n, s, t, x have different values depending upon surrounding sounds and syllable structure.
Phonemes

The underlying consonantal phonemes of Anglo-Latin are close in most respects to those of Latin, the primary difference being that and are replaced in Anglo-Latin by and . The sound was borrowed from Greek.

Consonantal allophones

Greek consonant clusters

Several word-initial clusters, almost all derived from Greek, are simplified in Anglo-Latin by omitting the first consonant:

βδ bd becomes : bdellium
τμ tm becomes : tmesis
κν cn, γν gn, μν mn and πν pn become : Cnossus, gnosis, Mnemosyne, pneumonia
ψ ps becomes : psyche
κτ ct and πτ pt become : Ctesiphon, ptosis
χθ chth and φθ phth become : Chthon, phthisis
ξ x becomes : Xanthippe

In the middle of words both consonants in these clusters are pronounced ; medial chth and phth are pronounced and respectively, as in autochthon and naphtha.

Polyphony

The letters c, d, g, h, n, s, t and x have different sounds depending upon their environment: these are listed summarily below.

Letter	c	d	g	h	n	s	t	x
Underlying sound
Primary phonemes				∅				,
Secondary phonemes

The full set of consonantal phonemes for Anglo-Latin is almost identical to that of English, lacking only.

Miscellaneous environments

Environments that condition the appearance of some of these phonemes are listed below:

Sound affected	Spelling	Environment	Resulting sound	Examples
	h	between a preceding stressed and a following unstressed vowel	∅	cf. "vehement, annihilate"
	h	after x	∅	exhibitor
	n	before velars and g		incubator, fungus
	s	between two vowels		miser, Cæsar, Jesus
	s	between a vowel and a voiced consonant		plasma, presbyter
	s	after a voiced consonant at the end of a word		lens, Mars
	x''	initially		Xanthippe
	x''	in the prefix ex- before a vowel or h in a stressed syllable		exemplar, exhibitor

The change of intervocalic to is common but not universal. Voicing is more common in Latin than in Greek words, and never occurs in the common Greek [|ending] -sis, where s is always voiceless: basis, crisis, genesis.

Palatalization

The most common type of phonemic change in Anglo-Latin is palatalization. Anglo-Latin reflects the results of no less than four palatalization processes. The first of these occurred in Late Latin, the second in Proto-Gallo-Romance, the third and fourth within the history of English. While the first two palatalizations are universally used in variants of Anglo-Latin, the third and especially the fourth are incompletely observed in different varieties of Anglo-Latin, leading to some variant pronunciations.

Palatalization 1 affected only the sound of t, converting it to when it preceded a semivowel i and did not follow s, t, or x. This sound eventually merged with and was subject to further changes in Palatalization 3. When followed or it did not change; in some cases it might later change to by Palatalization 4. Note that t did not change to before [|semivowel] e, but remained as in confiteor.
Palatalization 2 affected the sounds of c and g, converting them to and ; the arising from c merged with the arising from t, and both shared further developments of this sound, turning to. When geminate, palatalized cc and gg were affected diversely; only the second c in cc was palatalized, producing the sound, as in successor; but both gs in gg were palatalized, producing a sound, as in "exaggerate".
Palatalization 3 affected and of whatever origin, changing them to and.
Palatalization 4 affected and exactly as Palatalization 3 did, but also affected and, changing them to and

Some of the occasions on which palatalizations 3 and 4 fail to take effect should be noted:

Palatalization 3 fails: asphyxia, Cassiopeia, dyspepsia, excelsior, exeunt, gymnasium, symposium, trapezium. Note that the semivowel i is always pronounced as a full vowel in these cases. In some dialects Palatalization 3 frequently fails when another sound follows, as in "enunciation", "pronunciation", "appreciation", "glaciation", "association", with the sound then generalized to closely related forms.
Palatalization 4 fails : cæsura, fistula, pæninsula, pendulum.

Summary

Palatalization	Sound affected	Spelling	Environment	Resulting sound	Examples
1		t	when not initial, following s, t, or x, and before the semivowel i		annunciator usually changes to by Palatalization 3
2		c	before front vowels e, æ, œ, i, y		circus, c'ensus, Cynthia, foci, proscenium, scintilla, successor
2		g	before front vowels e, æ, œ, i, y		Gemini, reg'imen, algæ, fungi, gymnasium
3		c, t	when not initial, before semivowel i and e		acacia, rosacea, species, inertia, ratio fascia, cassia
3		x	when not initial, before semivowel i and e		cf. "complexion"
3		t	when not initial, before semivowel i and e		cf. "question, Christian, bestial, Attius"
3		s	when not initial, before semivowel i and e		Asia, ambrosia, nausea, Persia
4		d	when not initial, before open u,		educator, cf. also gradual
4		s, ss	when not initial, before open u,		cf. "censure, fissure"
4		x	when not initial, before open u,		cf. "luxury"
4		t	when not initial, before open u,		spatula
4		s	when not initial, before open u,		cf. "usual"

See further the section on the "semivowel" below.

Degemination

Following all of the above sound changes except palatalizations 3 and 4, "geminate" sequences of two identical sounds were degeminated, or simplified to a single sound. That is, bb, dd, ff, ll, mm, nn, pp, rr, ss, tt became pronounced. However, for the purposes of determining whether a syllable is [|open or closed], these single consonants continue to act as consonant clusters.
Other notable instances involving degemination include:

cc developed two pronunciations:
*before a front vowel cc is pronounced, and as it consists of two distinct sounds, is not degeminated.
*before a back vowel cc was pronounced which degeminated to simply
cqu degeminated to
gg also has two pronunciations:
* before a front vowel, gg is pronounced after degemination.
* before a back vowel, gg is pronounced after degemination.
sc before a front vowel was pronounced, and degeminated to.
sc and ss before the "semivowel" are pronounced

The following combinations, derived from Greek, are also pronounced as single consonants:

κχ cch is pronounced : Bacchus
πφ pph is pronounced : Sappho
τθ tth is pronounced : ''Pittheus''
Syllables

The simple vowels of Anglo-Latin can each have several phonetic values dependent upon their stress, position in the word, and syllable structure. Knowing which value to use requires an explanation of two syllabic characteristics, openness and stress.

Openness

Openness is a quality of syllables, by which they may be either open, semiopen, semiclosed, or fully closed.

Fully closed syllables

Fully closed syllables are those in which the vowel in the middle of the syllable is followed by at least one consonant, which ends or "closes" the syllable. Vowels in fully closed syllables appear:

At the end of a word followed by at least one consonant, e.g. plus, crux, lynx.
In the middle of a word followed by two or more consonants. The first of these consonants "closes" the syllable, and the second begins the following syllable; thus a word like lector consists of the two closed syllables lec and tor. Sequences of three or more consonants may be broken up in different ways but nothing depends upon the exact way in which this is done; any sequence of three or more consonants creates a closed syllable before it. The letter x is equivalent to cs, and as such also closes a syllable; a word like nexus is syllabified nec.sus, and consists of two closed syllables.
Two successive consonants of identical pronunciation are always pronounced as a single consonant in Anglo-Latin. When such a consonant sequence follows a penult syllable, the syllable counts as closed for the purposes of determining the position of stress: ba.cíl.lus, di.lém.ma, an.tén.na, co.lós.sus; they also prevent a penult syllable from lengthening, as in the previous examples and also pal.lor, com.ma, man.na, cir.rus, cas.si.a, pas.sim, glot.tis. They also count as closed for the purpose of determining whether a u is open or closed. In these respects they act precisely like syllable-closing consonant sequences, although they are pronounced as single sounds.
Certain sequences of consonants do not close syllables: these include all instances of obstruents followed by r, including br, cr, chr, dr, gr, pr, tr, thr. Thus words like supra and matrix are syllabified as su.pra and ma.trix, and the first syllable of both words is open; likewise a.cro.po.lis, di.plo.ma, de.tri.tus. The sequence also does not close the preceding syllable; i.e., one syllabifies re.qui.em and not req.ui.em.
Sequences of obstruents followed by l are less consistent. The sequences cl, chl, gl and pl do not close a syllable, e.g. nu.cle.us, du.plex with open first syllables; but the sequences bl, tl, thl do close a syllable, producing the syllabifications Pub.li.us, at.las, pen.tath.lon, with closed syllables before the l.
Semiclosed syllables

Semiclosed syllables are closed, unstressed syllables that had been closed and became open due to the merger of two following consonants of the same sound. For the purpose of determining vowel reduction in initial unstressed syllables they count as open.

Double consonants following an initial syllable containing a, e, i, o merge to count as one consonant: a.cumulator, a.gres.sor, ca.li.o.pe, a.pen.dix, e.lip.sis, co.lec.tor, o.pres.sor, o.pro.bri.um. The first syllables of all these words are only partially closed, and the vowels are reduced.
The same phenomenon occurs after u, but note that the u is both closed and reduced: su.pres.sor, su.ces.sor, cu.ri.cu.lum.
Semi-open syllables

Semiopen syllables are syllables that had been closed and unstressed, and that are followed by a sequence of consonants that can stand at the beginning of a syllable. Since instances of obstruents +r or l are already considered open, semiopen syllables are practically restricted to instances of s + obstruent, bl, and in some cases perhaps tl. Vowels in initial semiopen syllables may be treated as open for all purposes except for determining the value of u, which is still closed in semiopen syllables.

When s is followed by a consonant, s syllabifies with the following consonant: a.spa.ra.gus, pro.spec.tus, na.stur.ti.um, a.sphyc.si.a. S also syllabifies with a following palatalized c : a.sce.sis, pro.sce.ni.um. When s syllabifies with a following consonant, the preceding syllable counts as semi-open. Possible exceptions are pos.te.ri.or, tes.ta.tor.
Other sequences of consonants fully close an initial unstressed syllable and produce a short vowel: an.ten.na, am.ne.si.a, bac.te.ri.um, mag.ni.fi.cat, mac.sil.la, spec.ta.tor, per.so.na, oph.thal.mi.a, tor.pe.do.

See further the section on initial unstressed syllables below.

Open syllables

Open syllables are those in which the nucleus is followed:

By no consonant at the end of the word: pro, qua.
By a vowel in the middle of a word : oph.thal.mi.a, fi.at, cor.ne.a, cha.os, chi.as.mus, a.ma.nu.en.sis.
By only a single consonant in the middle of a word: sta.men, æ.ther, hy.phen, phœ.nix, ter.mi.nus, a.pos.tro.phe.
By those consonant clusters that do not fully or partially close a syllable In the middle of a word : ma.cron, du.plex, Cy.clops, tes.ta.trix, a.cro.po.lis.
Stress

Primary stress

Stress is another characteristic of syllables. In Anglo-Latin, it is marked by greater tension, higher pitch, [|lengthening] of vowel, and changes in vowel quality. Its exact concomitants in Classical Latin are uncertain. In Classical Latin the main, or primary stress is predictable, with a few exceptions, based on the following criteria:

In words of one syllable, stress falls on that syllable, as marked in the following syllables with an acute accent: quá, nón, pár.
In words of two syllables, stress falls on the first syllable of the word : e.g., bó.nus, cír.cus.
In words of three or more syllables, stress falls either on the penult or the antepenult, according to these criteria:
* If the penult contains a short vowel in an open syllable, the stress falls on the antepenult: e.g., stá.mi.na, hy.pó.the.sis.
* If the penult contains a long vowel; a diphthong; a closed syllable ; or is followed by z, the stress falls on the penult.
** Long vowel: cicāda > cicáda, exegēsis > exegésis.
** Diphthong: amóeba, Acháia, paranóia, thesáurus
** Closed syllable: aórta, interrégnum, prospéctus, rotúnda
**z: horízon

Primary stress can therefore be determined in cases where the penult is either closed or contains a diphthong. When it contains a vowel that may have been either short or long in Classical Latin, stress is ambiguous. Since Anglo-Latin does not distinguish short from long vowels, stress becomes a lexical property of certain words and affixes. The fact that decorum is stressed on the penult, and exodus on the antepenult, is a fact about each of these words that must be memorized separately.

Secondary stress

Secondary stress is dependent upon the placement of the primary stress. It appears only in words of four or more syllables. There may be more than one secondary stress in a word; however, stressed syllables may not be adjacent to each other, so there is always at least one unstressed syllable between the secondary and primary stress. Syllables containing semivowel e or i are never stressed.

If a four-syllable word has primary stress on the antepenult, there is no secondary stress: pa.rá.bo.la, me.tá.the.sis.
If a four-syllable word has primary stress on the penult, secondary stress is on the first syllable, marked hereafter with a grave accent: à.la.bás.ter, è.pi.dér.mis, sì.mu.lá.crum, prò.pa.gán.da, ùl.ti.má.tum.
If a 5-syllable word has primary stress on the antepenult, secondary stress is on the first syllable: hìp.po.pó.ta.mus, Sà.git.tá.ri.us, Phì.la.dél.phi.a.

Secondary stress in words with three or more syllables before the primary stress is less predictable. Such words include those of five syllables with penult primary stress, and all words of six syllables in length or longer. The following generalizations about such long words may be made:

The syllable immediately before the primary stress is never stressed.
Words produced by derivation from a shorter word convert the primary stress of the stem into a secondary stress, as long as it does not fall immediately before the new primary stress: é.le.phant- + í.a.sis becomes è.le.phan.tí.a.sis
Compounds of which the compound element consists of more than one syllable likewise convert the primary stress of their elements into secondary stress: phár.ma.co- + póei.a becomes phàr.ma.co.póei.a.
If a primary stress is eliminated in compounding or derivation because it would stand next to another stress, secondary stress remains unchanged: pùsillánimus + itas becomes pùsillanímitas.
Single-syllable prefixes and single-syllable compound elements are generally unstressed: ac.cù.mu.lá.tor, im.pè.di.mén.ta, Her.mà.phro.dí.tus
In other cases where the composition of the word may be unclear, every other syllable before the primary stress may be stressed: a.mà.nu.én.sis, ò.no.mà.to.póei.a. In some cases the third syllable before the primary stress is stressed when the second syllable is light, just as when assigning the primary stress.
Unstress

Unstressed syllables are all others. They are always adjacent to a stressed syllable; that is, there can never be more than two unstressed syllables in a row, and that only when the first one follows a stressed syllable.

Semivowel

Several sound-changes in Anglo-Latin are due to the presence of the "semivowel", an alteration of certain front vowels. Originally ordinary vowels, they acquired at different points in history the value of the glide . Subsequently, their value has fluctuated through history between a consonant and a vowel; the term "semivowel" thus reflects the intermediate historical as well as phonetic position of this sound. The environment in which the semivowel was produced was as follows:

The vowel was e, i, or y.
The vowel came immediately before a vowel or diphthong.
The vowel was not in the initial syllable: e, æ, ei, i and y in rhea, mæander, meiosis, fiat, diaspora, hyæna, did not become semivowels.
The vowel was unstressed: e, æ, œ, ei, i in idea, Piræus, diarrhœa, Cassiopeia, calliope, elephantiasis did not become semivowels.

Examples of words where e, i, y became semivowels include: miscellanea, chamæleon, nausea, geranium, rabies, Aries, acacia, ratio, fascia, inertia, halcyon, polyanthus, semiosis, mediator, Æthiopia, Ecclesiastes.
The effects of the semivowel include the following:

Though always in hiatus with a following vowel, semivowel i and y are never pronounced like long i or y ; historically semivowel e could also be distinguished from "long e". In current varieties of Anglo-Latin, semivowels are pronounced in a variety of ways:
* Most frequently as : labia, radius, azalea, præmium, cornea, opium, Philadelphia, requiem, area, excelsior, symposium, Cynthia, trivia, trapezium. In British Received Pronunciation, the prescribed pronunciation was once.
* In some dialects or registers of English as, e.g. junior pronounced.
* Merged with a following -es or -e ending, as in Aries, scabies.
* They are usually deleted following the palatals,, and : Patrici'a, consortium, Persia, nausea, ambrosia, Belgium.
*Occasionally a semivowel is retained after a palatal sound: ratio, sometimes Elysium. This type of pronunciation is an artificiality, as the sounds and resulted from an absorption of the original in the sequences,. The pronunciations with and result from a re-introduction of the i sound to conform with the spelling. This pronunciation was, however, recommended by academics, and as such is common in the pronunciation of Anglo-Latin phrases such as ab initio, in absentia, venire facias.
The consonant t changed to and then to before the semivowel arising from i: minutia, inertia, nasturtium.
The sibilants and are usually palatalized before the semivowel:
* > : cassia, fascia, species, militia
* > : amnesia, ambrosia
The vowels a, e, æ, and o in an open antepenult syllable become long if a semivowel appears in the next syllable:
* radius, Asia, azalea, area
* anæmia, chamæleon
* genius, medium, interior
* odium, co'''chlea, victoria''
Vowels

Mergers

The most notable distinction between Anglo-Latin and other varieties of Latin is in the treatment of the vowels. In Anglo-Latin, all original distinctions between long and short vowels have been obliterated; there is no distinction between the treatment of a and ā, etc., for instance. However, the subsequent development of the vowels depended to a large degree upon Latin word stress, and as this was in part dependent upon vowel length, in certain cases Latin vowel length contrasts have been preserved as contrasts in both stress and quality. However, the immediate governing factor is not length but stress: short vowels that were stressed for various reasons are treated exactly like stressed long vowels.
In addition to the merger of long and short vowels, other vowel mergers took place:

the diphthongs æ and œ merged with e
the vowels i and y merged
the diphthong ei, when still written distinctively, in pronunciation was merged with i or e

The merger of æ and œ with e was commonly recognized in writing. Sometimes forms written with æ and œ coexist with forms with e; in other cases the form with e has superseded the diphthong in Anglo-Latin. Consider the following:

æon and eon, æther and ether, amœba and ameba, anæmia and anemia, anæsthesia and anesthesia, cæsura and cesura, chamæleon and chameleon, dæmon and demon, diæresis and dieresis, encyclopædia and encyclopedia, fæces and feces, fœtus and fetus, hyæna and hyena, prætor and pretor

The following words are usually spelled with e, though they originally had æ:

ænigma > enigma, æquilibrium > equilibrium, æra > era, Æthiopia > Ethiopia, diarrhœa > diarrhea, mæander > meander, musæum > museum, œsophagus > esophagus, pæninsula > peninsula, præcentor > precentor, prædecessor > predecessor, præmium > premium, præsidium > presidium, tædium > tedium

In other cases, particularly names, the forms with the diphthongs are the only correct spelling, e.g., ægis, Cæsar, Crœsus, Œdipus, onomatopœia, pharmacopœia, Phœbe, phœnix, Piræus, sub pœna.
The sequences ei, æi, œi are sometimes retained in spelling preceding a vowel. In such cases the sequence is invariably pronounced as a simple vowel, sometimes i, sometimes e, and sometimes either.
The result was a system of five vowels, a, e, i, o, u. These would subsequently split, according to their environment, into long, short, and unstressed variants; and these variants would eventually also be altered based on neighboring sounds. However, in phonemic terms, Anglo-Latin still has only five vowels, with multiple allophones.
In addition, there were the diphthongs, ai, oi, ui, au and eu. Of these, ai and au eventually monophthongized, eu merged with the open variant of u, and yi merged with the "long" i. Only oi and ui remained as true diphthongs, but both are extremely rare.

Realizations of ''a, e, i'' and ''o''

The vowels a, e, i, o each have three primary variants: long, short, and reduced. Each of these may, in turn, exhibit allophonic variation based on features of its phonetic environment, including whether it is stressed, whether it is in an open or closed syllable, where it is positioned in the word, and what consonants are next to it. One of the most common environmental causes of vowel alteration is the presence of a following r. Vowels altered by a following "r" are called "r-colored".

Short vowels

This is the default value for vowels, observed:

In closed monosyllables
In stressed closed penult syllables
In all antepenult syllables, open or closed, which receive primary stress, except for those lengthened due to a following semivowel
In all syllables with secondary stress
In fully closed unstressed syllables which immediately precede, but do not follow, a primary or secondary stress, with exceptions for certain prefixes

All short vowels have variants colored by a following r sound when the r is followed by a different consonant or by the end of the word. In addition, there is a variant of short a that only appears after a sound – chiefly found in the sound qu. This is a relatively recent phonetic development in English and Anglo-Latin, so it wasn't present in earlier stages of Anglo-Latin.

Short vowels	IPA	Type 1	Type 2	Type 3	Type 4	Type 5
a		pax	mantis, pallor, malefactor	camera, marathon, calculus	anæsthesia, sa'turnalia	antenna, magnificat
ar		par, Mars	argus, catharsis	arbiter, Barbara	arbitrator, pharmacopœia	narcissus, sarcophagus
e'		rex	sector, error, præceptor, interregnum	Gemini, Penelope	memorandum, impedimenta	pentathlon, September, spectator
æ			quæstor	Æschylus, diæ'resis	prædecessor, æquilibrium
œ				Œdipus
i'		nil	isthmus, li'ctor, cirrus, narcissus	simile, tibia, antithesis, Sirius, delirium	simulacrum, administrator, hippopotamus	scintilla, dictator
y			lynx, Scylla, Charybdis	chrysalis, synthesis, Thucydides, Syria	symbiosis	hysteria
er		per	vertex, Nerva	terminus, hyperbola	perpetrator	Mercator, persona
ir			circus, Virgo			Virginia
yr			thyrsus	myrmidon
w-colored a'			quantum
o		non	impostor, horror	optimum, co'nifer, metropolis	propaganda, operator	October, thrombosis
w-colored ar		quartus
or		cortex, forceps	formula	cornucopia	torpedo

Exceptionally, monosyllables ending in es are pronounced with the rhyme, e.g., pes, res. This pronunciation is borrowed from that of -es used as an ending.
Exceptions to the pronunciation of short y generally involve prefixed elements beginning with hy- in an open syllable, such as hydro- and hypo-; these are always pronounced with a long y, e.g. hydrophobia, hypochondria. This pronunciation is the result of hypercorrection; they used to be pronounced with a short, as is still the case in the word "hypocrite" and hypochondria.
Prefixes may also behave in anomalous ways:

The prefix ob- in unstressed syllables may be reduced to, even when it closes a syllable: cf. "obsession, oblivion".
The Greek prefix en-, em- in a closed unstressed syllable may be reduced to, : encomium, emporium.
The prefix ex- in an unstressed syllable may be reduced to,, despite always being in a closed syllable: e'xterior, exemplar.
The prefix con-, com- is reduced to, when unstressed: consensus, compendium, regardless of whether the syllable is closed or not.
The preposition and prefix post is anomalously pronounced with "long o": : post-mortem and cf. "postpone"; also thus in words in which post was originally a preposition but not in other derivatives, being pronounced with short o in posterus, posterior, postremo, postridie.
Long vowels

Long vowels are those that historically were lengthened. By virtue of subsequent sound changes, most of these are now diphthongs, and none is distinguished by vowel length—however, the term "long" for these vowels is traditional. "Long" vowels appear in three types of environments:

a, e, i and o are long in an open monosyllable
a, e, i and o are long in a stressed open penult syllable
a, e and o are long when in an open syllable followed by semivocalic i and e
a and o are long when they precede another vowel in hiatus; i and e are long in the same environments, but only when they are not semivocalic. Hiatus may be original, or may arise from the deletion of h between a stressed and unstressed syllable

"Long" vowels	IPA	Type 1	Type 2	Type 3	Type 4
a		a, qua	crater, lumbago	radius, rabies	chaos, aorta, phaëthon
ar			pharos	area, ca'ries
e		e, re	ethos, le'mur, Venus	genius	idea, creator
æ			Cæsar	anæmia, chamæleon	æon, mæ'ander
œ			amœba, Crœsus		diarrhœa
ei					Deianira, Pleiades
er or ær			serum, Ceres, æra	bacterium, criterion, materia
i		i, pi'	item, Ti'gris, saliva, iris, horizon		miasma, hiatus, calliope
y			hydra, python, papyrus		hyæna, myopia
o		O, pro	bonus, toga	odium, enco'mium, opprobrium	boa, Chloe, cooperator
or			chorus, forum, thorax	emporium, euphoria

Reduced vowels

Reduced vowels appear in unstressed syllables, except for:

Closed initial unstressed syllables, which are generally short.
Certain unstressed final syllables.
Initial unstressed syllables

A variety of possible realizations are available for open, semiopen, and semiclosed initial unstressed syllables, including long, short, and reduced variants. Fully closed initial unstressed syllables are always short.

Vowel	IPA	Examples
a		amœba, a'nemone, ascesis
e	*	Elysium, e'meritus, epitome, erotica
æ	*	ænigma
œ'	*	œsophagus
i		idea
y'		hyperbola, hypothesis
o	**	Olympus

* A "schwi". It generally conflates with in RP and with schwa in Australia. Directly before another vowel it may be the 'HAPPY' vowel.
** A rounded schwa. It has a w-like offglide before another vowel the way does, but otherwise in many dialects it conflates with schwa.

Vowel	IPA	Examples
a'		papyrus, placebo, saliva, basilica
e	*	December, thesaurus
æ	*	Mæcenas, pæninsula, phænomenon
i		criteria, tribunal, minutiæ, cicada
y		lyceum, psychosis, synopsis, chrysanthemum
o	**	November, rotunda, colossus, proscenium

The variation in the value of the initial open unstressed vowel is old. Two different types of variation can be distinguished; the older use of a "long" vowel for i, y, o ; and more recent variations in the value of the reduced vowel.
No completely general rule can be laid down for the appearance of an initial unstressed long vowel, although such vowels must have appeared before the shortening of geminate consonants, as they are restricted to fully open syllables. The most general tendency is for long vowels to appear when i and y are either preceded by no consonant or by h, e.g., idea, i'sosceles, hyperbola, hypothesis. The prefixes in and syn never have long vowels: inertia, sy'nopsis. I and y also tend to be short when the next syllable contains an i or y, short or long: militia, divisor.
O is a little less likely to appear with a long value in this location; or, at any rate, it is harder to distinguish the long value from the reduced vowel.
Unstressed e and i in open syllables had merged by the early 17th century; their reduced reflex is often transcribed, but by many speakers is still pronounced as a high front lax vowel, distinct from the derived from a, here transcribed. For such speakers, the first syllables in Demeter and Damascus are pronounced differently.
Unstressed o, also often transcribed, is by many speakers pronounced with considerable lip-rounding, here transcribed.
Vowel IPA Examples
a addendum, a'ppendix, calliope, farrago
e ellipsis, E'cclesiastes, erratum
i Illyria, cf. cirrhosis
y' syllepsis
o collector, oppressor, opprobrium, possessor

The partially closed initial unstressed vowels began as short vowels, but were later reduced.
These are the same sounds as in the preceding chart, but without the option of the "long" vowels and much less rounding of the o.
proscenium does not fall in this group, apparently because felt to be pro+''scenium''.
Medial unstressed syllables
All vowels in medial unstressed syllables are reduced to or, regardless of whether they are in open or closed syllables.
Vowel IPA Examples
a diabetes, emphasis, syllabus, diagnosis, melancholia
e * impetus, phaethon, malefactor, commentator, Alexander
i * animal, legislator
y * platypus, analysis, apocrypha
o hyperbola, demonstrator
Vr interceptor, superficies
Open and closed ''u''
The pronunciation of the letter u does not depend upon stress, but rather upon whether the syllable in which it appears is open or closed. There are no "long" and "short" variants of either type of u, but there are reduced and r-colored variants of both types.
Open ''u''
The underlying sound of open u is ; it shares developments with the homophonous diphthong eu, which can however appear in closed syllables.
The sound in and its variants is deleted in various environments:
After palatal consonants, whether original or resulting from the merger of and the preceding consonant, in both stressed and unstressed syllables; e.g. : junior, Julius, Jupiter, cæsura, educator, spatula, fistula
After the following consonants when they precede u in an initial, final, or stressed syllable:
and : rumor, verruca, luna, Lucretia, Pluto, effluvium
, : super, superior, Vesuvius, and variably Zeus
In some dialects, particularly of American English, is deleted after all dental/alveolar consonants when they precede u in an initial, final or stressed syllable:
,, and : duplex, caduceus, medusa, nucleus, lanugo, tutor, Thucydides
For some speakers, is pronounced following these consonants.
is not deleted in the following environments:
When u is the first letter of the word or follows : uterus, humerus
Following a vowel: Ophiuchus
Following labials : pupa, furor, nebula, uvula, musæum
Following velars : cumulus, lacuna, Liguria
When it is in an interior unstressed syllable not following a palatal consonant, remains after a single consonant even when it might be deleted in a stressed syllable: amanuensis and cf. "cellular, granular", for some speakers "virulent".
After a consonant cluster may or may not be deleted: ''pæninsula, cornucopia''
Closed ''u''
Closed u appears only in closed syllables, except for instances of the prefix sub- before a vowel. It has reduced and r-colored variants, as shown below. r-coloration only appears when the r is followed by a different consonant or the end of the word.
Diphthongs
Diphthongs in Anglo-Latin are distinguished from simple vowels by having no long or short variants, regardless of position or syllable type. The only diphthongs that are at all common are au and eu. For variations in the pronunciation of the latter, see Open u. Au is, rarely, reduced in an unstressed syllable to : Augustus pronounced as if "Agustus". Such words may be pronounced with the full value of the diphthong, however.
Diphthongs IPA Examples
ai Achaia, Maia, Gaius
au aura, pauper, nausea, autochthon, aurora, glaucoma, mausoleum
ei deinde, meiosis
eu neuter, euthanasia, zeugma
oi coitus, paranoia
ou boustrophedon
ui cuius, hui, huius
yi harp yia, Eileithyia

Note that ui is generally disyllabic, as in fruc.tu.i, va.cu.i, tu.i. The monosyllabic words cui and huic were traditionally pronounced and.
In general, ua, ue, ui, uo, and uu come immediately after q, g, or s. However, when they occur in the same syllable, as in suavitas, questus, anguis, aliquot, and equus, they are not considered diphthongs. Accordingly, when these letter combinations occur in the penultimate syllable, it is not necessarily stressed. Note that their second vowel may become reduced, r-colored, or take on a different quantity even in a monosyllable.
Endings
The pronunciation of the final syllables of polysyllabic words do not always correspond to what might be expected from the constituent phonemes. Some endings also have more than one pronunciation, depending upon the degree of stress given to the ending.
Three types of endings can be distinguished:
Vowel alone
The first class consists of vowels alone, i.e. -a, -e, -æ, -i, -o, -u, -y. In this class, the vowels are generally long, but -a is always.
Letter IPA Examples
a circa, fauna, mania, quota
e'' ante', epitome, posse
æ algæ', larvæ, vertebræ
i, y alibi', Gemini, moly
o ego', Pluto, torpedo
u'' situ

Words deriving from Greek long -ê end in unless assimilated, such as simile ending in .
In the words mihi, tibi, sibi, by an old tradition, the final i was pronounced like final e above.
A late and purely academic pronunciation distinguished final -ā from -a by pronouncing the former like "long a", : for instance, Oxford professor A. D. Godley rhymed Rusticā and "day". That this was not the usual pronunciation can be told from such forms as circa, infra, extra, in absentia, sub pœna, all of which have an originally long final vowel: circā, sub pœnā, etc. This use is distinct from the older tradition had made all final a's "long", regardless of their Latin length.
Vowel before a consonant cluster
The second class consists of vowels followed by consonant clusters such as ns, nt, nx, ps, x. In this class, the vowels are always short, except for u, which may be reduced to.
Letter IPA Examples
a climax, phalanx
e biceps, index
i matrix, phœnix
o Cyclops
u exeunt, Pollux
y pharynx, oryx
Vowel before a single consonant
The third class consists of vowels followed by the consonants l, m, n, r, s, t. The treatment of these endings is inconsistent. Generalizations include:
All vowels are reduced before final r for : Cæsar, pauper, triumvir, Mentor, sulfur, martyr.
All vowels are reduced to before l'': tribuna'l, Babel, pugil, consul.
Except sometimes before t'', a is reduced to before any of this class of consonant: animal, memoriam, titan, atlas.
All instances of u are reduced to before any of this class of consonant: consul, dictum, locus.
The remaining endings are: -at, -em, -en, -es, -et, -im, -is, -it, -on, -os, -ot. Of these, -em, -im, -is, -it, -on, -ot have two possible pronunciations, one with a short vowel and one with. Final -es and -ies are alike pronounced. Final -eus, when derived from Greek -ευς -eus rather than from -εος -eos with the -os changed to -us in Latin, may be pronounced as a single syllable with a diphthong, or as two syllables with a long e followed by -us. However, even when pronounced as two syllables, -eus counts as a single syllable for the purpose of determining vowel length – that is, the syllable preceding the -eus ending is considered the penult, just as happens in derivatives ending in -ian – though the placement of the stress shifts. E.g. Ἰλιονεύς Īlioneus .
Ending IPA Examples
at magnificat
at fiat
em idem, ibidem
em item, tandem
en lichen, semen
es Achilles, appendices, fæces
ies rabies, species
et videlicet, scilicet, quodlibet
eus Perseus, Nereus
eus Perseus, Nereus
im passim
im interim
is * ægis, crisis, hypothesis, basi's
it * exit, deficit
on icon, marathon
on bison, siphon, horizon
os chaos, pathos, pharos
ot aliquot
ot aliquot

* The vowel of -is, -it is a "schwi". It generally conflates with in RP and with schwa in Australia.
This last pronunciation of -os is the expected one; however, in the masculine accusative plural, where the ending is historically -ōs, the academic prescription was the pronunciation. Such an ending is not found in English loan words or proper names.
Adjectives in ''-an'' and ''-ic''
English adjectives formed from Greek and Latin roots often end in a suffix -an or -ic added to the oblique stem, sometimes retaining a preceding thematic vowel. These produce generally predictable sound changes in the stem though, depending on its source or simply due to confusion, English -ean may be either stressed or unstressed. The first derives from the Latin adjectival suffix -ānus, though it has far wider application in English than in Latin. The other suffix, -ic, derives from the Greek adjectival suffix -ικος -ĭkos.
The fact that these suffixes are added to the oblique stem is relevant with words of the third declension whose stems end in a consonant that alters or disappears in the nominative case, as is apparent in such English noun–adjective pairs as Pallas ~ Palladian, Mars ~ Martian, Venus ~ Venerian, and indeed from non-adjectival derivatives of these words such as 'palladium'. Some roots have more than one oblique stem, in which case they may have more than one adjectival form in English.
;Stressed vowel plus -an and unstressed -ian
The forms of these suffixes depends on the first vowel of the nominal suffix in Latin or Greek. The resulting forms are carried over into Latin from Greek, and into English from Latin. English adjectives in -ean, where the e is inherited from the Greek, are stressed on the suffix, but there are also adjectives in -ean where the e originates in Latin, and those are not stressed.
For example,
Greek Samos > adjective Samios > Latin Samius > English 'Sā́mian'
Greek Periklēs > adjective Perikleios > Latin Periclēus > English 'Pericléan'
Greek Lēda > adjective Lēdaios > Latin Lēdæus > English 'Ledaean' or 'Ledéan'
Greek noun and adjective Ptolema'ios > Latin Ptolemæus > English 'Ptolemaean'
Greek Argō > adjective Argōos > Latin Argōus > English 'Argóan'
Greek Sapphō > adjective Sapphōios > Latin Sapphōius > English 'Sapphóian'
Because the i of the suffix -ian makes an exception to the usual shortening of antepenultimate vowels, forms such as 'Samian' above are pronounced with a long stressed vowel.
Many Greek nouns ending in -o- take adjectives like those ending in -ē- instead, and some may take either form, in which case there may be two adjectives in English. An example is Sisyphus:
Greek Sīsyphos > adjective Sīsyphios > Latin Sīsyphius > English 'Sisýphian'
> adjective Sīsypheios > Latin Sīsyphēus > English 'Sisyphéan'
In the opposite direction, ē-vowel Aristotelēs produces 'Aristotḗlian' alongside expected 'Aristoteléan'.
The final iota subscript in Greek feminine words ending in -ῳ -ōi is frequently omitted in Latin, – if an 'i' appears in English it may be taken directly from the Greek, – but words that end in plain -ω -ō in Greek may also have Greek adjectives in -ōios if the 'i' was historically present.
;Unstressed -ean
There is another suffix spelled -ean in English, but this one unstressed. It corresponds to the unstressed Latin adjectival suffix -ĕus and does not derive from Greek. An example is Latin Herculēs > Latin adj. Herculĕus > English 'Hercúlean', alongside Greek Hēraklēs > Greek adj. Hērakleios > Latin Hēraclēus/Hēraclīus > English 'Heracléan'. The stress assignment of the 'Herculean' has been affected by 'Heraclean', so the mixed form 'Herculéan' is now also heard.
;Adjectives in -ic
The Greek suffix -ικος -ĭkos replaces the vowels of nominal endings apart from retaining a or ō, which will be stressed in English. Stress assignment of English follows the Latin, as though the suffix were -icus in English as well and the last syllable of the stem were the antepenult when it English it's actually the penult. Thus English 'Homeric' is pronounced with a short stressed penultimate e, when in other English words from Latin an e in that position would be pronounced long.
For example,
Greek Homēros > adjective Homērikos > Latin Homēricus > English 'Homĕ́ric'
Greek Aristotelēs > adjective Aristotelikos > Latin Aristotelicus > English 'Arístotĕ́lic'
Greek Alkaios > adjective Alkaikos > Latin Alcaicus > English 'Alcáic'
Greek hērōs > adjective hērōikos > Latin hērōicus > English 'heróic'
Greek ēch'ō > adjective ēchōikos > Latin ēchōicus > English 'echóic'
Thus 'Aristotelian' is pronounced with a long e, but 'Aristotelic' with a short e.
A number of Greek nouns ending in ē form adjectives in -aic, such as 'Cyrenaic'.
History
Latin as traditionally pronounced by English speakers is part of the living history of spoken Latin through medieval French into English.
Three stages of development of Anglo-Latin can thus be distinguished:
Note: The English pronunciation of Latin varies with accent as much as English itself, as the two's phonological systems are inseparably connected. For convenience's sake, the list below will end with approximately a received pronunciation accent. As the traditional pronunciation of Latin has evolved alongside English since the Middle Ages, the page detailing English's phonological evolution from Middle English can give a better idea of what exactly has happened, and this is just an overview.
Stage I
Latin from the period when its orthography and grammar became standardized through to the pronunciation changes of Late Latin, while it was still a living language. Changes that took place in this period included:
the merger of f and ph as
the change in pronunciation of v to and of j to.
the merger of i and y as
the merger of e, æ and œ as
the change of non-initial, unstressed, prevocalic and to
the loss of distinctions of vowel length
the palatalization of t to before
Stage II
Latin spoken in the context of Gallo-Romance and French from approximately the 6th to the 11th-12th centuries. During this period, Latin became a primarily written language, separated from the ordinary spoken language of the people. While it escaped many of the changes of pronunciation and grammar of Gallo-Romance, it did share a few of the changes of the spoken language. This was for the most part a period of stability.
Changes in this period included:
the palatalization of c and g to and before front vowels
the voicing of intervocalic s to
the fronting of u to
the restoration of the vowels and from
Stage III
Latin spoken in the context of English from the 11th/12th centuries to the present. This last stage provides the greatest and most complicated number of changes. It starts with the displacement of the native pronunciation of Latin under the Anglo-Saxon kings with that used in the north of France, around the time of the Norman conquest in 1066. The English and French pronunciations of Latin were probably identical down to the 13th century, but subsequently Latin as spoken in England began to share in specifically English sound changes. Latin, thus naturalized, acquired a distinctly English sound, increasingly different from the pronunciation of Latin in France or elsewhere on the Continent. For example, Arthur, Prince of Wales and Catherine of Aragon corresponded for two years in Latin, but when they met in 1501 they found that they could not understand each other's spoken conversation, because they had learned different Latin pronunciations.
Some phases of development in this third stage can be reconstructed:
1200–1400
The adaptation of the French sounds to English:
* was substituted for.
* the vowels were given the values a, e, i, o, u
* was substituted for in closed syllables, e.g. lux >. did not substitute out as in unstressed open syllables, as it would have if the ~ distinction was solely length based: saeculum
* At some point in the Middle English period, the distinctly French vowel was substituted with the English diphthong. It is unclear when exactly this happened, and may have always been the English pronunciation of French u.
Stressed open penultimate vowels were lengthened, creating the short/long contrasts:
1400–1600
Merger of unstressed open with
Non-syllable-initial, unstressed, prevocalic became
Lengthening of the first of two vowels in hiatus
Lengthening of e, i, or o in pretonic initial syllables
Diphthongization of to
Lengthening of vowels in open syllables before in the next syllable
Raising of and to and.
Degemination of geminate consonants
Palatalization of and before
Fronting of to
1600–1800
Monophthongization of ai to and au to
Change of to in many words, restoring original syllabicity.
Change of fronted u to
Palatalization of before
Lowering of short, to,
Tensing of short e to
Former long i becomes
Fronting and raising of short a, long a, and long e to , creating the new contrasts: a :, e :, i :, o :
Beginning of vowel reductions to.
Short e, i and u before R; i.e., and are all merged to.
Short a is lowered and lengthened before r in a closed syllable, ultimately reaching modern
1800–present
Breaking of and to diphthongs and, and then laxing to and the latter further to
In non-rhotic accents, syllable-final r becomes a vowel. The vowel-R sequences simplify somewhat: arC >, orC >, erC, irC, urC >.
Continued reduction of unstressed vowels to.
Shortening of a in a stressed open penult syllable, e.g., data
Other languages
A similar situation occurred in other regions, where the pronunciation of the local language influenced the pronunciation of Latin, eventually being replaced with reconstructed classical pronunciation. In German-speaking areas, traditional Germanized pronunciation of Latin is discussed at Deutsche Aussprache des Lateinischen, with reconstructed classical pronunciation at Schulaussprache des Lateinischen.

Vowel	IPA	Examples
a		addendum, a'ppendix, calliope, farrago
e		ellipsis, E'cclesiastes, erratum
i		Illyria, cf. cirrhosis
y'		syllepsis
o		collector, oppressor, opprobrium, possessor

Vowel	IPA	Examples
a		diabetes, emphasis, syllabus, diagnosis, melancholia
e	*	impetus, phaethon, malefactor, commentator, Alexander
i	*	animal, legislator
y	*	platypus, analysis, apocrypha
o		hyperbola, demonstrator
Vr		interceptor, superficies

Diphthongs	IPA	Examples
ai		Achaia, Maia, Gaius
au		aura, pauper, nausea, autochthon, aurora, glaucoma, mausoleum
ei		deinde, meiosis
eu		neuter, euthanasia, zeugma
oi		coitus, paranoia
ou		boustrophedon
ui		cuius, hui, huius
yi		harp yia, Eileithyia

Letter	IPA	Examples
a		circa, fauna, mania, quota
e''		ante', epitome, posse
æ		algæ', larvæ, vertebræ
i, y		alibi', Gemini, moly
o		ego', Pluto, torpedo
u''		situ

Letter	IPA	Examples
a		climax, phalanx
e		biceps, index
i		matrix, phœnix
o		Cyclops
u		exeunt, Pollux
y		pharynx, oryx

Ending	IPA	Examples
at		magnificat
at		fiat
em		idem, ibidem
em		item, tandem
en		lichen, semen
es		Achilles, appendices, fæces
ies		rabies, species
et		videlicet, scilicet, quodlibet
eus		Perseus, Nereus
eus		Perseus, Nereus
im		passim
im		interim
is	*	ægis, crisis, hypothesis, basi's
it	*	exit, deficit
on		icon, marathon
on		bison, siphon, horizon
os		chaos, pathos, pharos
ot		aliquot
ot		aliquot

Traditional English pronunciation of Latin

Illustrative survivals

Vowel length and stress

Stress placement

Secondary stress

Long and [|short vowels]

Alphabet

Conversion of Greek to Latin

Consonants

Letters and sounds

Phonemes

Consonantal allophones

Greek consonant clusters

Polyphony

Miscellaneous environments

Palatalization

Degemination

Syllables

Openness

Fully closed syllables

Semiclosed syllables

Semi-open syllables

Open syllables

Stress

Primary stress

Secondary stress

Unstress

Semivowel

Vowels

Mergers

Realizations of ''a, e, i'' and ''o''

Short vowels

Long vowels

Reduced vowels

Initial unstressed syllables

Medial unstressed syllables

Open and closed ''u''

Open ''u''

Closed ''u''

Diphthongs

Endings

Vowel alone

Vowel before a consonant cluster

Vowel before a single consonant

Adjectives in ''-an'' and ''-ic''

History

Stage I

Stage II

Stage III

1200–1400

1400–1600

1600–1800

1800–present

Other languages