exothermic

 
Pronunciation: /ˌɛksə(ʊ)ˈθəːmɪk/

adjective

Chemistry
  • (of a reaction or process) accompanied by the release of heat. The opposite of endothermic (sense 1)
  • (of a compound) formed from its constituent elements with a net release of heat.

Derivatives

exothermically

adverb

Origin:

late 19th century: from French exothermique