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Entry 2 senses · 2 variants Webster, 1913

Mesozoic

/mĕsˌ-əz-ō'-ĭk/ · Mes·o·zo·ic · IPA /mˌɛsəzˈoʊɪk/
01 a. Belonging, or relating, to the secondary or reptilian age, or the era between the Paleozoic and Cenozoic. See Chart of Geology.
  1. 1.
    Belonging, or relating, to the secondary or reptilian age, or the era between the Paleozoic and Cenozoic. See Chart of Geology.(Geol.) See: Geology
02 n. The Mesozoic age or formation.
  1. 1.
    The Mesozoic age or formation.