From Wiktionary, the free dictionary
See also: ф,
ѳ,
θ,
Ө, and ө
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The letter sometimes has a wavy cross-bar. |
Ѳ • (F) (upper case, lower case ѳ)
- (obsolete) Consonantal letter intended to represent the sound /θ/. Replaced by the letter Ф (F) in the spelling reform of 1917.