Pa′le‐o‐zo″ic (pā′lē̍‐ō̍‐zō″ĭk), a. [Paleo- + Gr. ζωή life, fr. ζη̑ν to live.] (Geol.) Of or pertaining to, or designating, the older division of geological time during which life is known to have existed, including the Silurian, Devonian, and Carboniferous ages, and also to the life or rocks of those ages. See Chart of Geology.
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Webster's Dictionary 1913
Webster's Revised Unabridged Dictionary, C. & G. Merriam Co., 1913.