Exothermic

Origin

From French exothermique, from exo- "outside" + thermique "of heat", both ultimately from Ancient Greek.

Full definition of exothermic

Adjective

1. (chemistry, of a reaction) That releases energy in the form of heat.
2. (chemistry, of a compound) That releases heat during its formation, and absorbs it during its decomposition
3. (zoology) Of an animal whose body temperature is regulated by external factors; cold-blooded

Antonyms

• endothermic