Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “exothermic reaction”

exothermic reaction

noun [C]  /ˌek·soʊˈθɜr·mɪk riˈæk·ʃən/ us  
chemistry a chemical reaction that produces heat
(Definition of exothermic reaction from the Cambridge Academic Content Dictionary © Cambridge University Press)
What is the pronunciation of exothermic reaction?
Add Cambridge dictionaries to your browser to your website

Definitions of “exothermic reaction” in other dictionaries

Translations of “exothermic reaction”

Word of the Day


When birds roost, they go somewhere to rest or sleep.

Word of the Day


Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More