Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “lactic acid”

lactic acid

noun [U]    
an acid that exists in sour milk and is produced in muscles after a lot of exerciseSpecific chemicals, chemical compounds and gasesSubstances and structures in the bodyTypes of chemical
(Definition of lactic acid noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
Focus on the pronunciation of lactic acid

Translations of “lactic acid”

Word of the Day


an ability to do things in the stated, especially positive, way

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