(a.) Characterized by or formed with, evolution of heat; as, an exothermic reaction; -- opposed to endothermic.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). exothermic. Retrieved September 22, 2026, from http://smartdefine.org/exothermic/definitions/2006003 |
| Chicago | Webster's. 2011. "exothermic" http://smartdefine.org/exothermic/definitions/2006003 (accessed September 22, 2026). |
| Harvard | Webster's 2011, exothermic, Smart Define, viewed 22 September, 2026, <http://smartdefine.org/exothermic/definitions/2006003>. |
| MLA | Webster's. "exothermic" 27 May 2011. Web. 22 September 2026. <http://smartdefine.org/exothermic/definitions/2006003> |