noun
- The earliest eon in the history of the Earth from the first accretion of planetary material (around 4, 600 million years ago) until the date of the oldest known rocks (about 3, 800 million years ago. ; no evidence of life).
- synonyms: Hadean, Hadean time, Hadean eon, Hadean aeon, Priscoan, Priscoan eon
WordNet 3.0 © 2006 by Princeton University
| APA | WordNet. (2010). priscoan aeon. Retrieved September 22, 2026, from http://smartdefine.org/priscoan_aeon/definitions/1329540 |
| Chicago | WordNet. 2010. "priscoan aeon" http://smartdefine.org/priscoan_aeon/definitions/1329540 (accessed September 22, 2026). |
| Harvard | WordNet 2010, priscoan aeon, Smart Define, viewed 22 September, 2026, <http://smartdefine.org/priscoan_aeon/definitions/1329540>. |
| MLA | WordNet. "priscoan aeon" 23 October 2010. Web. 22 September 2026. <http://smartdefine.org/priscoan_aeon/definitions/1329540> |