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Pleistocene

Pleis·to·cene [ plstə sn ]


noun 
Definition:
 
geologic epoch: the epoch of geologic time, about 1.6 million to 10,000 years ago, characterized by the disappearance of continental ice sheets and the appearance of humans

[Mid-19th century. < Greek pleistos "most" + kainos "recent"]

Pleis·to·cene adjective
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