quaternary period
English Thesaurus
1. last 2 million years (noun.time)
instance hypernym | : | geological period, period, |
definition | : | a unit of geological time during which a system of rocks formed (noun.time) |
part holonym | : | holocene, holocene epoch, recent, recent epoch, |
definition | : | approximately the last 10,000 years (noun.time) |
part holonym | : | glacial epoch, pleistocene, pleistocene epoch, |
definition | : | from two million to 11 thousand years ago; extensive glaciation of the northern hemisphere; the time of human evolution (noun.time) |
part meronym | : | age of mammals, cenozoic, cenozoic era, |
definition | : | approximately the last 63 million years (noun.time) |
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