Home › Words › M › megazoomegazoomegazoo means A very large zoo.EtymologyFrom mega- + zoo.nounA very large zoo.e.g.“[…] some nature reserves will inevitably become megazoos or zooparks.” — 1983, Alan Howard Brush, George Alfred Clark, Perspectives in Ornithology, page 32:Definitions & examples from Wiktionary (CC BY-SA 3.0).