Mesozoic

adjective

Me·​so·​zo·​ic ˌme-zə-ˈzō-ik How to pronounce Mesozoic (audio)
ˌmē-,
-sə-
: of, relating to, or being an era of geologic 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
Mesozoic noun

Word History

First Known Use

1840, in the meaning defined above

Time Traveler
The first known use of Mesozoic was in 1840

Dictionary Entries Near Mesozoic

Cite this Entry

“Mesozoic.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Mesozoic. Accessed 26 Nov. 2022.

Kids Definition

Mesozoic

adjective

Me·​so·​zo·​ic ˌmez-ə-ˈzō-ik How to pronounce Mesozoic (audio)
ˌmēz-,
ˌmēs-,
ˌmes-
: of, relating to, or being an era of geological history between the Paleozoic and Cenozoic eras or the corresponding system of rocks see geologic time
Mesozoic noun
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