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单词 geological period
释义
Geological Period
nnoun.timea unit of geological time during which a system of rocks formed
Synset:period
Examples:
  • ganoid fishes swarmed during the earlier geological periods
Part Holonyms:era geological era
Hypernyms:geologic time geological time
Inherited Hypernyms:periodgeological timetimeattributeabstractionentity
Direct Hyponyms:glacial epochglacial periodice age
Instance Hyponyms:Cambrian Cambrian period Carboniferous Carboniferous period Cretaceous Cretaceous period Age of Fishes Devonian Devonian period Jurassic Jurassic period Lower Carboniferous Lower Carboniferous period Missippian period Mississippian Ordovician Ordovician period Pennsylvanian Pennsylvanian period Upper Carboniferous Upper Carboniferous period Permian Permian period Age of Man Quaternary Quaternary period Silurian Silurian period Tertiary Tertiary period Triassic Triassic period
Part Meronyms:epoch
Full Hyponyms:
ice age
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更新时间:2025/1/24 16:34:09