What is the meaning of Archaean?

- Definitions|2
- Thesaurus|181
- Abbreviations|0

(n.) 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.
(a.) Ancient; pertaining to the earliest period in geological history.

Webster's Revised Unabridged Dictionary

6

|15 years ago|725 views|share |citing

APA	Webster's. (2011). archaean. Retrieved September 23, 2026, from http://smartdefine.org/archaean/definitions/1975509
Chicago	Webster's. 2011. "archaean" http://smartdefine.org/archaean/definitions/1975509 (accessed September 23, 2026).
Harvard	Webster's 2011, archaean, Smart Define, viewed 23 September, 2026, <http://smartdefine.org/archaean/definitions/1975509>.
MLA	Webster's. "archaean" 27 May 2011. Web. 23 September 2026. <http://smartdefine.org/archaean/definitions/1975509>

{ class="autoclick" }next definition (/)

Alternative definitions by

WordNet Webster's