U (Armenian letter)

U, Ou, or Ow is, according to the Armenian orthography reform, the 34th letter of the Armenian alphabet. Even though U was used de facto before the orthography reform, it was not officially part of the alphabet. It represents the close back rounded vowel /u/. It is romanized with the letter U or the digraph Ow. Since this letter was not made by Mesrop Mashtots, it has no numerical value, and because there is no individual letter that represents the "u" sound, it uses a digraph made up of the letter Vo and the letter Hyun.