What is Ot (Cyrillic)?

Ot is a letter of the early Cyrillic alphabet. Though it originated as a ligature of the letters Omega and Te , it functions as a discrete letter of the alphabet, placed between х and ц. This can be seen in the first printed Cyrillic abecedarium , and continues in modern usage.

Ot is used in Church Slavonic to represent the preposition отъ 'from' and prefix от-. It does not stand for this sequence of letters in any other context, nor can the sequence от be substituted for it where it does occur. It is used with a similar purpose in mediaeval manuscripts of other Slavonic languages written with the Cyrillic alphabet. In printed books ѿ is often used in preference to for the numeral 800.