adjective

exothermic

exothermic

Burning wood is an exothermic reaction.

Burning wood is an exothermic reaction.

The chemical process was highly exothermic.

The chemical process was highly exothermic.

((noun)) (of a chemical reaction) that produces heat Combustion is an exothermic process.

Synonyms: heat-releasing; Antonyms: endothermic

From Greek 'exo-' meaning 'outside' and 'thermē' meaning 'heat'. It literally means 'giving heat out'.

Think of 'exo-' as 'out' (like exit) and 'therm' as heat (like thermometer). So, it's a reaction that lets heat out.

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