Ѳ

Ѳ (Cyrillic Capital Letter Fita, U+0472) is a historical letter within the Cyrillic script, visually similar to the Greek capital letter Theta, consisting of a circle intersected by a horizontal bar. It was primarily used to represent the sound /f/ (or occasionally /θ/ in older contexts) specifically in words borrowed from Greek that originally contained the letter Theta, thereby preserving their etymological connection. Fita coexisted with Cyrillic Ef (Ф) in Old Church Slavonic and early Russian orthography, where Ef was used for other instances of the /f/ sound. Following the 1918 Russian orthography reform, Fita was abolished from the Russian alphabet, with Ef assuming all instances of the /f/ sound. Today, Fita continues to be used in modern Church Slavonic texts.