Home › Words › M › megadomemegadomemegadome means A large dome-shaped building used for concerts, sports etc.Among words judged in Lexicurio's Arena, megadome ranks #16,734 of 42,752 for Qualifying.EtymologyFrom mega- + dome.nounA large dome-shaped building used for concerts, sports etce.g.“So, to standardise conditions, the only sensible solution is to build an indoor cricket megadome in Dubai and hold all test matches there.” — 2015 August 20, Tom Davies, “Ashes 2015: England v Australia, fifth Test, day one – live!”, in The Guardian:Definitions & examples from Wiktionary (CC BY-SA 3.0).