Dictionary
Col•os•se•um
Pronunciation: (kol"u-sē'um), [key]—
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.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.