noun
- A period marked by distinctive character or reckoned from a fixed point or event.
- synonyms: era
- Astronomy) an arbitrarily fixed date that is the point in time relative to which information (as coordinates of a celestial body) is recorded.
- synonyms: date of reference
- A unit of geological time that is a subdivision of a period and is itself divided into ages. .
WordNet 3.0 © 2006 by Princeton University
| APA | WordNet. (2010). epoch. Retrieved September 20, 2026, from http://smartdefine.org/epoch/definitions/1250305 |
| Chicago | WordNet. 2010. "epoch" http://smartdefine.org/epoch/definitions/1250305 (accessed September 20, 2026). |
| Harvard | WordNet 2010, epoch, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/epoch/definitions/1250305>. |
| MLA | WordNet. "epoch" 23 October 2010. Web. 20 September 2026. <http://smartdefine.org/epoch/definitions/1250305> |