Tyun (Armenian letter)
Tyun, Tyown, or Tiwn is the thirty-first letter of the Armenian alphabet. It represents the voiceless [alveolar plosive] /t/ in Eastern Armenian and the voiced alveolar plosive /d/ in Western Armenian. It is typically romanized with the letter T. Created by Mesrop Mashtots in the 5th century, it has a numerical value of 4000. The uppercase Տ is similar to the Latin uppercase S, whilst the lowercase տ is like a ligature of the lowercase u and n.