noun
- A period of three months; especially one of the three three-month periods into which human pregnancy is divided.
- One of three divisions of an academic year. .
WordNet 3.0 © 2006 by Princeton University
| APA | WordNet. (2010). trimester. Retrieved September 20, 2026, from http://smartdefine.org/trimester/definitions/1325874 |
| Chicago | WordNet. 2010. "trimester" http://smartdefine.org/trimester/definitions/1325874 (accessed September 20, 2026). |
| Harvard | WordNet 2010, trimester, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/trimester/definitions/1325874>. |
| MLA | WordNet. "trimester" 23 October 2010. Web. 20 September 2026. <http://smartdefine.org/trimester/definitions/1325874> |