Definition of lactic acid in English:

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lactic acid

Pronunciation: /ˌlaktik ˈasəd/


A colorless syrupy organic acid formed in sour milk and produced in the muscle tissues during strenuous exercise.
  • Chemical formula: CH3CH(OH)COOH
Example sentences
  • Scheele also discovered many of what we now call organic acids, for example lactic acid in sour milk and citric, malic, and tartaric acids in fruits.
  • Without these enzymes, lactic acid and other organic acids build up in the body.
  • The effect of this is too gradually calm down the muscles but also to help the removal of lactic acid from the muscle tissues.

For editors and proofreaders

Syllabification: lac·tic ac·id

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