noun
- The eon following the Hadean time and preceding the Phanerozoic eon; from about 3, 800 million years ago until 544 million years ago.
- synonyms: Precambrian, Precambrian aeon, Precambrian period
WordNet 3.0 © 2006 by Princeton University
| APA | WordNet. (2010). precambrian eon. Retrieved September 21, 2026, from http://smartdefine.org/precambrian_eon/definitions/1303630 |
| Chicago | WordNet. 2010. "precambrian eon" http://smartdefine.org/precambrian_eon/definitions/1303630 (accessed September 21, 2026). |
| Harvard | WordNet 2010, precambrian eon, Smart Define, viewed 21 September, 2026, <http://smartdefine.org/precambrian_eon/definitions/1303630>. |
| MLA | WordNet. "precambrian eon" 23 October 2010. Web. 21 September 2026. <http://smartdefine.org/precambrian_eon/definitions/1303630> |