Definition from Wiktionary, the free dictionary
- Rhymes: -əʊɪk
- (geology) Of a geologic era within the Phanerozoic eon that comprises the Triassic, Jurassic and Cretaceous periods from about 230 to 65 million years ago, when life on earth was dominated by reptiles.
of era from 230 to 65 milion years ago
- (geology) The Mesozoic era.