Definition of archean Archean
Ar•che•an
We found 3 definitions of archean from 2 different sources.
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What does archean mean?
WordNet
Noun |
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| archean - 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 | ||
| precambrian, precambrian aeon, precambrian eon precambrian period | ||
Adjectivearchean, archeaner, archeanest |
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| archean - of or relating to the earliest known rocks formed during the Precambrian Eon | ||
| archaean | ||
| early at or near the beginning of a period of time or course of events or before the usual or expected time; "early morning"; "an early warning"; "early diagnosis"; "an early death"; "took early retirement"; "an early spring"; "early varieties of peas and tomatoes mature before most standard varieties" | ||
| geology a science that deals with the history of the earth as recorded in rocks | ||
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