Coliseum(redirected from Colosseum (disambiguation))
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, Ital. Colosseo, common name of the Flavian Amphitheater in Rome, near the southeast end of the Forum, between the Palatine and Esquiline hills. Begun by Vespasian, c.A.D. 75, and completed by his son Titus in A.D.
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1.(cap.) The Flavian amphitheater in Rome.
2. Any large Roman amphitheater.
3. Now, any large sports arena, open or roofed.