Dictionary
Pli•o•cene
Pronunciation: (plī'u-sēn"), [key] Geol.
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adj.
noting or pertaining to an epoch of the Tertiary Period, occurring from 10 to 2 million years ago, and characterized by increased size and numbers of mammals, by the growth of mountains, and by global climatic cooling. See table under
geologic time.
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n.
the Pliocene Epoch or Series.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.