Pleistocene

a.

1.

(Geol.) Of or pertaining to the epoch, or the deposits, following the Tertiary, and immediately preceding man.

Noun

1.

Pleistocene - from two million to 11 thousand years ago; extensive glaciation of the northern hemisphere; the time of human evolution Synonyms: Pleistocene epoch, Glacial epoch

Age of Man, epoch, Glacial epoch, Pleistocene epoch, Quaternary, Quaternary period