# Mesozoic

> English word · Adjective · frequency rank #42,773

## Definitions
1. 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.

## Etymology
From meso- + -zoic.

## Common misspellings (11)
`emsozoic`, `meoszoic`, `mesoozic`, `mesozioc`, `mesozoci`, `mesozoicc`, `mesozzoic`, `messozoic`, `meszooic`, `mmesozoic`, `mseozoic`

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/mesozoic