Dictionary
Phan•er•o•zo•ic
Pronunciation: (fan"ur-u-zō'ik), [key] Geol.
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n.
the eon comprising the Paleozoic, Mesozoic, and Cenozoic eras.
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adj.
of or pertaining to this eon.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.