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Word of the Day Tuesday, June 9, 2026

mesozoic

/mɛˈzoʊ.ɪk/ noun · British & US
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What does mesozoic mean?

noun

The geologic era from about 252 million to 66 million years ago, characterized by the dominance of reptiles, especially dinosaurs. This era is divided into three periods: Triassic, Jurassic, and Cretaceous.

Example

"The mesozoic era was a time of great diversity in life on Earth, with many species of dinosaurs and other reptiles."

Definition generated by AI and curated by RJS Tech Solutions LLP.

Synonyms for mesozoic

Antonyms of mesozoic

Rhymes with mesozoic

Etymologically related