Pronunciation: (mez"u-zō'ik, mes"-, mē"zu-, -su-), [key] Geol.
noting or pertaining to an era occurring between 230 and 65 million years ago, characterized by the appearance of flowering plants and by the appearance and extinction of dinosaurs. See table under geologic time.
the Mesozoic Era or group of systems.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.