51�Թ�

First recorded in 1930–35; from Greek �������í�ٳ����Dz� “hall,” neuter noun use of adjective �������í�ٳ����Dz� “having a door on both sides, having a double entrance,” equivalent to amphi- prefix meaning “around, on both sides” + -�ٳ�ý���Dz�, from �ٳ�ý��- stem of �ٳ�ý���� “door” + neuter noun and adjective suffix -on ; amphi-, door ( def. )