Etymology
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Pliocene (adj.)

in geology, in reference to the most recent division of the Tertiary, 1833, from plio- "more" (Latinized form of pleio-) + -cene "recent." Execrated by classical purists (along with Miocene and Eocene); a proper form from Greek would be *Plionocene. Roughly 5.3 million to 2.6 million years ago, it is distinguished from the other two epochs by having more fossils of still-existing species. The Pliocene and the more recent Pleistocene, both comparatively brief, commonly now are combined as the Plio-Pleistocene

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Definitions of Pliocene

Pliocene (n.)
from 13 million to 2 million years ago; growth of mountains; cooling of climate; more and larger mammals;
Synonyms: Pliocene epoch
From wordnet.princeton.edu

Dictionary entries near Pliocene

plight

Plimsoll

plink

plinth

plio-

Pliocene

PLO

plod

plodding

plonk

plop