Me·​so·​zo·​ic | \ ˌme-zə-ˈzō-ik How to pronounce Mesozoic (audio) , ˌmē-, -sə- \

Definition of Mesozoic

: of, relating to, or being an era of geological history comprising the interval between the Permian and the Tertiary or the corresponding system of rocks that was marked by the presence of dinosaurs, marine and flying reptiles, ammonites, ferns, and gymnosperms and the appearance of angiosperms, mammals, and birds — see Geologic Time Table

Other Words from Mesozoic

Mesozoic noun

First Known Use of Mesozoic

1840, in the meaning defined above

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The first known use of Mesozoic was in 1840

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Cite this Entry

“Mesozoic.” Dictionary, Merriam-Webster, Accessed 24 Sep. 2020.

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Mes·​o·​zo·​ic | \ ˌme-zə-ˈzō-ik How to pronounce Mesozoic (audio) , -sə- \

Kids Definition of Mesozoic

: an era of geological history which extends from the Paleozoic to the Cenozoic and in which dinosaurs are present and the first birds, mammals, and flowering plants appear

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