Precambrian 1
noundomain: time
Princeton WordNet [ver.3.1]
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EnglishDefinition
the eon following the Hadean time and preceding the Phanerozoic eon; from about 3,800 million years ago until 544 million years ago
Instance_Hypernym
eon 1
noun
the longest division of geological time
Part_meronym
Proterozoic 1
noun
from 2,500 to 544 million years ago; bacteria and fungi; primitive multicellular organisms
Archean 1
noun
the time from 3,800 million years to 2,500 million years ago; earth's crust formed; unicellular organisms are earliest forms of life
a glaciation that extended from 2400 million years ago to 2100 million years ago, during the Siderian and Rhyacian periods of the Paleoproterozoic era.
EnglishPart_holonym
Proterozoic 1
noun
from 2,500 to 544 million years ago; bacteria and fungi; primitive multicellular organisms
Archean 1
noun
the time from 3,800 million years to 2,500 million years ago; earth's crust formed; unicellular organisms are earliest forms of life
a glaciation that extended from 2400 million years ago to 2100 million years ago, during the Siderian and Rhyacian periods of the Paleoproterozoic era.
