designating or of the Slavic alphabet traditionally attributed to Saint Cyril, 9th cent. apostle to the Slavs: in modified form, it is still used in Russia, Bulgaria, and other Slavic countries
Of or being an alphabet derived from the Greek alphabet and used in writing Russian, Bulgarian, and several other languages of Eastern Europe and the former Soviet Union.
Origin of CyrillicInvention incorrectly attributed toSaint Cyril
- The Cyrillic alphabet or writing system.