Acacian
/əˈkeɪʃn/Church History
noun
A follower of the Arian Christological doctrines of Acacius, a 4th-cent. bishop of Caesarea.
adjective
1Of, relating to, or associated with Acacius, a 4th-cent. Arian bishop of Caesarea, or his doctrines.
2Of, relating to, or associated with Acacius, a 5th-cent. Ecumenical Patriarch of Constantinople, who caused a split between the Eastern and Western Church from 484 to 519; especially in Acacian schism.
Origin
Late 16th century; earliest use found in Meredith Hanmer (1543–1604), Church of England and Church of Ireland clergyman and historian. From the name of Acacius (post-classical Latin Acacius, Byzantine Greek Ἀκάκιος.