Etymology
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Pleistocene (adj.)

a name given by geologists to the lower division of the Quaternary, now reckoned as from about 2.6 million years ago and essentially "pertaining to the glacial period," 1839, coined by Lyell from Greek pleistos "most" (superlative of polys "much;" see pleio-) + -cene "recent."

Entries linking to Pleistocene

pleio- 

also pleo-, word-forming element meaning "more," from Greek pleiōn "larger, greater in quantity, the more part, very many" (comparative of polys "much"), from PIE *ple- (source also of Latin plere "to fill," plebes, "the populace, the common people;" Greek plēthein "be full," plērēs "full"), possibly a variant of root *pele- (1) "to fill."

-cene 
word-forming element in geology, introduced by Sir Charles Lyell (1797-1875), from Latinized form of Greek kainos "new," cognate with Latin recens (see recent).

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Definitions of Pleistocene

Pleistocene (n.)
from two million to 11 thousand years ago; extensive glaciation of the northern hemisphere; the time of human evolution;
Synonyms: Pleistocene epoch / Glacial epoch
From wordnet.princeton.edu

Dictionary entries near Pleistocene

pledge

Pleiades

plein-air

pleio-

pleiotropy

Pleistocene

pleistodox

*plek-

plenary

plenipotentiary

plenitude

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