difficult to distinguish from Д. The traditional Russian name of the letter is фита́ fitá (or, in pre-1918 spelling, ѳита́). Fita was mainly used to write proper...

Before 1918, there were four extra letters in use: Іі (replaced by Ии), Ѳѳ (Фита "Fita", replaced by Фф), Ѣѣ (Ять "Yat", replaced by Ее), and Ѵѵ (ижица "Izhitsa"...

ѱи (psi) Ѳ ѳ 9 th, ft T t, Ft ft т, фт /t/ and approx. /θ/ or /f/ thita фита (fita) Ѵ ѵ 400 i, u I i; Ꙋ ꙋ и, у /i/, /y/, /v/ ijița ижица (ižica) Ꙟ ꙟ,...