About The Word Archaean
Learn about the word Archaean to help solve your crossword puzzle. Discover Archaean definitions and meaning, origins, synonyms, related terms and more at the free Crossword Dictionary.
Archaean
| Archaean Definition And Meaning |
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What's The Definition Of Archaean?
[adj] (geology) used of the earliest known rocks
Synonyms | Synonyms for Archaean: archean | early Related Terms | Find terms related to Archaean: See Also | Archaean In Webster's Dictionary \Ar*ch[ae]"an\, a. [Gr. 'archai^os ancient, fr. 'archh`
beginning.]
Ancient; pertaining to the earliest period in geological
history.
\Ar*ch[ae]"an\, n. (Geol.) The earliest period in geological period, extending up to the Lower Silurian. It includes an Azoic age, previous to the appearance of life, and an Eozoic age, including the earliest forms of life. Note: This is equivalent to the formerly accepted term Azoic, and to the Eozoic of Dawson. |
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