What was the original name of the Roman Colosseum?

The Roman Colosseum was known as the Flavian Amphitheatre, named for the Flavian dynasty that sponsored its construction. The dynasty included Emperor Vespasian, his son Titus, and Titus’s successor Domitian.

Construction began under Vespasian around AD 72 on the site of Nero’s enormous palace complex. Titus inaugurated the amphitheatre in AD 80 with a lengthy programme of games, and Domitian later completed modifications below the arena. The building could accommodate tens of thousands of spectators and hosted gladiatorial combats, animal hunts, executions, dramas, and other public spectacles.

The name “Colosseum” became associated with the structure later. It probably derives from the Colossus of Nero, a gigantic statue that stood nearby and was eventually altered and moved. A historical nuance is that “Flavian Amphitheatre” is the standard later name, while ancient Romans may simply have called it the amphitheatre; nevertheless, the stored answer is the accepted quiz answer for the building’s original dynastic name.