Quaternary period 1
noundomain: time
Princeton WordNet [ver.3.1]
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EnglishDefinition
last 2 million years
Instance_Hypernym
period 4
noun
a unit of geological time during which a system of rocks formed
Part_meronym
Cenozoic 1
noun
approximately the last 63 million years
Holocene 1
noun
approximately the last 10,000 years
Pleistocene 1
noun
from two million to 11 thousand years ago; extensive glaciation of the northern hemisphere; the time of human evolution
EnglishPart_holonym
Cenozoic 1
noun
approximately the last 63 million years
Holocene 1
noun
approximately the last 10,000 years
Pleistocene 1
noun
from two million to 11 thousand years ago; extensive glaciation of the northern hemisphere; the time of human evolution
