Old Church Slavonic

noun

the oldest attested Slavic language, an ecclesiastical language written first by Cyril and Methodius in a Bible translation of the 9th century and continued in use for about two centuries. It represents the South Slavic, Bulgarian dialect of 9th-century Salonika with considerable addition of other South and West Slavic elements. Abbreviation: OCS
Also called Old Church Slavic, Old Slavic, Old Slavonic.
Compare Church Slavic.

Origin of Old Church Slavonic

First recorded in 1875–80

British Dictionary definitions for old church slavonic

Old Church Slavonic

Old Church Slavic

noun

the oldest recorded Slavonic language: the form of Old Slavonic into which the Bible was translated in the ninth century, preserved as a liturgical language of various Orthodox Churches: belonging to the South Slavonic subbranch of languages