List of acronyms: H
(Main list of acronyms)
HA
- ha – Hausa language – Hectare
- HA – Haiti – High Availability
- HAARP – High Frequency Active Auroral Research Program
- HAART – Highly Active Anti-Retroviral Therapy
- HAI – Human Awareness Institute
- HAL – Hardware Abstraction Layer
- HALO –
- * Habitation and Logistics Outpost
- * High Altitude Low Opening
- HALT
- * Highly Accelerated Life Test
- * Hungry Angry Lonely Tired
- HAMR – Heat-assisted magnetic recording
- HAN - IATA code for Noi Bai International Airport
- HANS – Head And Neck Support
- HARM – High-speed Anti-Radiation Missile
- hat – Haitian Creole language
- HAT – Highest Astronomical Tide – Hungarian Automated Telescope
- hau – Hausa language
- HAW – Heavy Antitank Weapon
- HAWK – Homing All the Way Killer
- HAZ – Heat-Affected Zone
- HAZMAT – Hazardous Materials
HB
- HBCD – HexaBromoCycloDodecane
- HBCI – Home Banking Computer Interface
- HBCU – Historically black colleges and universities
- HBO – Home Box Office
- HBR – Harvard Business Review
- HBT – Heterojunction Bipolar Transistor
- HBV – Hepatitis B Virus
HC
- h.c. – honoris causa
- HCAL — Homogeneous calorimeter
- HCCI – Homogeneous Charge Compression Ignition
- HCF – Highest Common Factor
- HCI – Human–Computer Interaction/Interface
- HCPCS – Health Care Procedure Coding System
- HCSC – Higher Command and Staff Course
- HCT – Higher Colleges of Technology, tertiary education institution in the United Arab Emirates
HD
- HD
- * Henry Draper (star catalogue)
- * Hull-Down
- * High Definition
- * Huntington's Disease
- HDD
- * Hard Disk Drive
- * High-Density Disk
- HDL – High-Density Lipoprotein
- HDM – Human Decision-Making
- HDMI – High-Definition Multimedia Interface
- HDR
- * Hard disk recorder
- * Henningson, Durham & Richardson
- * High dynamic range, a term used in both digital imaging and 3D rendering
- * Hot Dry Rock
- * Human Development Report
- HDRA – Henry Doubleday Research Association
- HDTV – High-definition television
HE
- he – Hebrew language
- He – Helium
- HE – High Explosive
- HEAT – High-Explosive Anti-Tank
- heb – Hebrew language
- HEBA – Hellenic Basketball Clubs Association
- HEER – High-Explosive Extended Range
- HEIC – Honourable East India Company
- HELOC – Home equity line of credit
- HEMP – High-Altitude Electromagnetic Pulse
- HEO
- * High Earth orbit
- * Highly elliptical orbit
- HEOSS – High Earth Orbit Space Surveillance
- HEP – High-Explosive Plastic
- HEPA – High-Efficiency Particulate Air
- her – Herero language
- HESH – High-Explosive, Squash-Head
- HESV – Heavy Engineering Support Vehicle
- HETT – Heavy Equipment Transporting Truck / Heavy Equipment Truck Tractor
- HEU – Highly Enriched Uranium
- HEV
- * Hybrid Electric Vehicle
- * Hazadous EnVironment suit - outfit worn by Half-Life protagonist Gordon Freeman
- Hewitts – Hills in England, Wales and Ireland over Two Thousand feet
HF
- Hf – Hafnium
- HF – High Frequency
- HFAC – Human Factors
- HFE – Human Fertilisation and Embryology
- HFE – The common-emitter current gain in a BJT transistor. See: BJT
- HFEA – Human Fertilisation and Embryology Authority
HG
- Hg – Mercury
- HGC – UK Human Genetics Commission
- HGF – Human Growth Factor
- HGTV – Home & Garden Television
HH
- HHD – humanitatum doctor
- HHB – Ha Ha Bonk – The noise made when you laugh your head off. Used instead of LOL...
- HHS – (U.S. Department of) Health and Human Services
HI
- hi – Hindi language
- HI – Hawaii
- HIC – Hierarchical Ingredient Code, a system of classifying drug ingredients
- HIDACZ – High-Density Airspace Control Zone
- HIH – His (or Her) Imperial Highness
- HIIT - High-Intensity Interval Training
- HIM – His (or Her) Imperial Majesty
- HIMAD – High to Medium Altitude Air Defence
- HIMARS - HIgh Mobility Artillery Rocket System
- HIMEZ – High Altitude Missile Engagement Zone
- HIMYM – How I Met Your Mother
- hin – Hindi language
- HIPAA – U.S. Health Insurance Portability and Accountability Act
- Hipparcos – HIgh Precision Parallax COllecting Satellite
- Hird – Hurd of interfaces representing depth
- HiRISE – High Resolution Imaging Science Experiment
- HIT – Health Information Technology
- HIV – Human Immunodeficiency Virus
- HIWT –
HJ
- HJ – hic jacet
- HJD – Heliocentric Julian Day
HK
- HK – Hong Kong
- HKD – Hong Kong dollar
- HKG –
- * Hong Kong
- * Hong Kong International Airport
- HKMAO – Hong Kong and Macau Affairs Office
- HKO – Hong Kong Observatory
- HKS – HyperKinetic Syndrome
- HKSAR – Hong Kong Special Administrative Region of the People's Republic of China
HL
- hL – Hectolitre
- HL
- * Holding Line
- * Half-Life
- HLA – High Level Architecture (simulation) – Human Leukocyte Antigen
- HLL – High-Level Language
- HLN – Headline News
- HLOS – High Level Output Specification
- HLS – hoc loco situs
- HLVW – Heavy Logistics Vehicle, Wheeled
HM
- HM
- * Heard Island and McDonald Islands
- * His Majesty / Her Majesty
- * Hatsune Miku
- H/MAD – High/Medium Altitude Air Defence
- HMCE – Her/His Majesty's Customs and Excise
- HMCS
- * Her/His Majesty's Canadian Ship
- * Her Majesty's Courts Service
- HMD
- * Heard and McDonald Islands
- * Helmet-Mounted Display
- HMF – HydroxyMethyl Furfural
- HMICFRS - His/Her Majesty's Inspectorate of Constabularies and of Fire and Rescue Services
- HMM – Hidden Markov model
- HMMWV – High Mobility Multipurpose Wheeled Vehicle
- hmo – Hiri Motu language
- HMO – Health maintenance organization
- HMO – House in multiple occupation
- HMO – Human milk oligosaccharide
- HMP – Her Majesty's Prison
- HMRC – Her/His Majesty's Revenue and Customs
- HMS - Her/His Majesty's Ship
- HMSO – Her Majesty's Stationery Office
- HMV – His Master's Voice (disambiguation)
HN
- HN – Honduras
- HND
- * Honduras
- * Tokyo Haneda Airport
- HNL
- * Honduran lempira
- * Daniel K. Inouye International Airport
HO
- ho – Hiri Motu language
- Ho – Holmium
- HO – Honduras
- HOLLAND – Hope Our Love Lasts And Never Dies
- HOMES – the Great Lakes; Huron, Ontario, Michigan, Erie, Superior
- HONY – Humans of New York, a photoblog.
- HOPI – Hybrid Optical and Packet Infrastructure
- HoReCa – Hotel, Restaurant and Catering
- HORIZON – Hélicoptère d'observation radar et d'investigation sur zone
- HOSTAC – Helicopter Operations from Ships Other Than Aircraft Carriers
- HOT – Highly Optimised Tolerance
- HOTAS – Hands on throttle-and-stick
- HOTT or HotT – Hordes of the Things
- HOV – High Occupancy Vehicle
HP
- hp – horse power
- HP –
- * Hewlett-Packard
- *Hindustan Petroleum
- * Himachal Pradesh
- HPA – UK Health Protection Agency
- HPCL – Hindustan Petroleum Corporation Limited
- HPGL or HP-GL – Hewlett-Packard Graphics Language
- HPH - IATA code for Cat Bi International Airport
- HP-IB – Hewlett-Packard Instrument/Interface Bus
- HP-IL – Hewlett-Packard Interface Loop
- HPLC – High Performance Liquid Chromatography
- HPMOR – Harry Potter and the Methods of Rationality
- HPT – High Payoff Target
- HPV – Human Papilloma Virus
HQ
HR
- hr – Croatian language
- HR
- * Croatia
- * Haryana
- * Harvard Revised star catalogue
- * Human Resources
- HRBL – High-level Representation of Behavior Language
- HRD – Human Resource Development
- HRED – Human Research and Engineering Directorate
- HRF – High Readiness Forces
- HRH – His Royal Highness
- HRK – Croatian kuna
- HRM – His (or Her) Royal Majesty
- HRM – Human Resource Management
- HRT – Hormone Replacement Therapy
- hrv – Croatian language
- HRV
- * Croatia
- * High Resolution Visible
HS
- Hs – Hassium
- HSA – A health savings account available to taxpayers in the United States.
- HSBC – The Hong Kong and Shanghai Banking Corporation
- HSC
- * Higher School Certificate
- * Helicopter Sea Combat, a type of U.S Navy aviation squadron
- HSM – High School Musical
- HSMAD – Human Science/Modeling and Analysis Data
- HSN – Home Shopping Network
- HSPH – Harvard School of Public Health
- HSS
- * Health Service Support
- * High-Speed Steel
- HSSI – High-Speed Serial Interface
- HST – see entry
- HSV
- * Herpes Simplex Virus
- * Hue Saturation Value
HT
- ht – Haitian Creole language
- HT
- * Haiti
- * High Temperature
- * hoc tempore
- * hoc titulo
- HTA – HyperText Application
- HTC
- * High Tech Computer Corporation, original name of the company now known simply as HTC
- HTFU – Harden The F**k Up
- HTG – Haitian gourde
- HTH – Hope That Helps
- HTI – Haiti
- HTML – HyperText Markup Language
- HTS – High-Temperature Superconducting wire
- HTTP – HyperText Transfer Protocol
HU
- hu- Hungarian language
- HU – Hungary
- HUD – Head-Up Display –
- HUF – Hungarian forint
- HUHA – Head up his/her ass
- HUI - IATA code for Hue's Phu Bai International Airport
- HUMINT – Human Intelligence
- Hum-Vee – See HMMWV
- hun – Hungarian language
- HUN – Hungary
- HURD – Hird of Unix-Replacing Daemons
- HVU – High Value Unit
HV
- HV – Upper Volta
- HVAC – Heating, ventilation and air conditioning Used in architecture, business and marketing; refers to a building's entire system of heating, moving, or cooling air.
- HVAP – High Velocity Armour Piercing
- HVHF – High velocity human factors
- HVI - High Value Individual
- HVM – High Velocity Missile
- HVO – Upper Volta
- HVP –
- *
- * High vacuum process
- * Hydrolyzed vegetable protein
- *
- *
- * High Voltage Protection
- * High Vapor Pressure
- * High-Velocity Projectile
- * High-Video Pass
- * High-Velocity Particle
- * Hub Voice Processor
- * Human Variome Project
- HVT - High-Value Target
HW
HX
- HX –
- * IATA code of Hong Kong Airlines
- * Medical history
- * Hydrogen halide
- * Concept automobile by HUMMER
- HXB – The glycoprotein Tenascian C
HY
- hy – Armenian language
- hye – Armenian language
- HYP
- * Halkın Yükselişi Partisi, a political party in Turkey
- * Harvard, Yale, Princeton
- HYS – Harvard, Yale, Stanford