pleistocene Meaning, Definition & Usage
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noun from two million to 11 thousand years ago; extensive glaciation of the northern hemisphere; the time of human evolution
Glacial epoch; Pleistocene epoch.
WordNet
Pleis"to*cene adjective
Etymology
Gr. most + new.Definitions
(Geol.) Of or pertaining to the epoch, or the deposits, following the Tertiary, and immediately preceding man. --n. The Pleistocene epoch, or deposits.