designating or of the first geologic epoch of the Quaternary Period, characterized by a series of advancing and retreating continental glaciers in the Northern Hemisphere and the development of modern humans and toolmaking cultures
Origin of Pleistocene; from Classical Greek pleistos, most, superlative of polys, much (see poly-) + -cene
the Pleistocene Epoch or its rocks
Of, relating to, or being the epoch of geologic time from about 1.8 million to 10,000 years ago, the older of the two epochs of the Quaternary Period. It is characterized by the alternate appearance and recession of northern glaciation, the appearance and worldwide spread of hominins, and the extinction of numerous land mammals, such as the mammoths, mastodons, and saber-toothed tigers. See Table at geologic time.
The Pleistocene Epoch.
Origin of PleistoceneGreek pleistos, most; see pel&schwa;-1 in Indo-European roots + –cene.
- (geology) The Pleistocene epoch.