- 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.
- the Pliocene Epoch or Series.
Origin of Pliocene
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for pliocene
He may not be from the Pliocene Era, but his views sure are.Creationists Stall Eight-Year-Old Girl’s Idea for State Fossil for South Carolina
March 28, 2014
And that is true of all the horses of the latter part of the Pliocene epoch.
Eocene, miocene, pliocene Tuff, Lias and Trias and that is enough.The Book of Humorous Verse
With the termination of the Pliocene Age we find ourselves on firmer ground.
This was probably not far from the close of the Pliocene Age.
The age of these gravels is, therefore, pronounced to be Pliocene.
- of, denoting, or formed in the last epoch of the Tertiary period, which lasted for three million years, during which many modern mammals appeared
- the Pliocene the Pliocene epoch or rock series
C19: plio- + -cene, from Greek kainos recent
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Word Origin and History for pliocene
Online Etymology Dictionary, © 2010 Douglas Harper
- The fifth and last epoch of the Tertiary Period, from about 5 to 2 million years ago. During this time the global climate became cooler and the number and expanse of grasslands and savannas increased greatly. This change in vegetation was accompanied by an increase in long-legged grazers. The land bridge between North America and South America also formed at this time, and massive ice sheets accumulated at the poles. In the later part of the epoch many of the species living in polar regions became extinct. See Chart at geologic time.
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