Mesozoic Hear it!

Mesozoic Definition

Meso·zoic (mes′ə zō′ik, mez′-)

adjective

designating or of the middle geologic era of the Phanerozoic Eon, subdivided into the Triassic, Jurassic, and Cretaceous periods and characterized by the development and extinction of the dinosaurs and the development of the first birds, mammals, and flowering plants

Etymology: meso- + zo- + -ic

Mesozoic Idioms

the Mesozoic

the Mesozoic Era or its rocks