noting or written in an alphabet, probably invented by St. Cyril in about a.d. 865, formerly used in writing Old Church Slavonic and other Slavic languages: almost completely replaced by Cyrillic starting about the 10th century.
the Glagolitic alphabet.
Origin of Glagolitic
1860-65; < New Latinglagoliticus, equivalent to glagolit(a), Latinization of Serbo-Croatianglagòljica (ultimately derivative of OCS glagolŭ speech, word) + -icus-ic
1861, from Serbo-Cr. glagolica "Glagolitic alphabet," from Old Church Slavonic glagolu "word" (see call) + Greek suffix -itic. The older of the two Slavic writing systems (Cyrillic is the other), it was designed by Cyrillus c.863 C.E.