(n)from two million to 11 thousand years ago; extensive glaciation of the northern hemisphere; the time of human evolution, Syn.Pleistocene epoch, Glacial epoch
The Collaborative International Dictionary of English (GCIDE) v.0.53Collaborative International Dictionary (GCIDE)
a. [ Gr. &unr_; most + &unr_; new. ] (Geol.) Of or pertaining to the epoch, or the deposits, following the Tertiary, and immediately preceding man. -- n. The Pleistocene epoch, or deposits. [ 1913 Webster ]