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Mesozoic \Mes`o*zo"ic\, a. [Meso- + Gr. ? life, fr. ? to live.] (Geol.) Belonging, or relating, to the secondary or reptilian age, or the era between the Paleozoic and Cenozoic. See Chart of {Geology}. Mesozoic \Mes`o*zo"ic\, n. The Mesozoic age or formation.
Mesozoic n : from 230 million to 63 million years ago [syn: {Mesozoic era}, {Age of Reptiles}]