I. |kalsə|dōnēən, -nyən adjective
Usage: usually capitalized
Etymology: Chalcedon, ancient city (now Kadiköy ) in Asia Minor opposite Byzantium (from Latin, from Greek Chalkēdōn ) + English -ian
: of or relating to Chalcedon, the ecumenical council held there in A.D. 451, or the teachings of the council
II. noun
( -s )
Usage: usually capitalized
: one who adheres to the doctrinal decisions of the ecumenical council held in Chalcedon in A.D. 451 ; especially : a non-Monophysite orthodox Christian