- noting or pertaining to a script derived from Greek uncials and traditionally supposed to have been invented by St. Cyril, first used for the writing of Old Church Slavonic and adopted with minor modifications for the writing of Russian, Bulgarian, Serbian, and some non-Slavic languages of Central Asia.
- of or relating to St. Cyril.
- Cyrillic script.
- denoting or relating to the alphabet derived from that of the Greeks, supposedly by Saint Cyril, for the writing of Slavonic languages: now used primarily for Russian, Bulgarian, and Serbian
- this alphabet
