英语词汇“archean”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词

archean

释义

Adjective: archean
Usage: US (=archaean)

Of or relating to the earliest known rocks formed during the Precambrian Eon
- archaean

Noun: Archean aar'keeun
Usage: US (=Archaean)

The time from 3,800 million years to 2,500 million years ago; earth's crust formed; unicellular organisms are earliest forms of life
- Archean eon, Archean aeon, Archeozoic, Archaeozoic, Archeozoic eon, Archaeozoic aeon, Archaean

See also: early

Type of: aeon, eon

Part of: Precambrian, Precambrian aeon, Precambrian eon, Precambrian period

Encyclopedia: Archean

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