/kol'euh see"euhm/ , n.
1. an ancient amphitheater in Rome, begun A.D. c70 by Vespasian, having the form of an oval 617 by 512 ft. (188 by 156 m).
2. ( l.c. ) coliseum.
[ colosseus gigantic kolossiaîos, equiv. to koloss ( ós ) COLOSSUS + -iaios adj. suffix ]