citric acid

noun

cit·​ric acid ˈsi-trik- 

: a tricarboxylic acid C₆H₈O₇ occurring in cellular metabolism, obtained especially from lemon and lime juices or by fermentation of sugars, and used chiefly as a flavoring

Examples of citric acid in a Sentence

Recent Examples on the Web

When a disinfectant is necessary, Hunt and other experts say products with citric acid, hydrogen peroxide and ethyl alcohol, such as alcohol wipes, are safer alternatives. — Sandee Lamotte, CNN Money, 7 Aug. 2026

This variation may occur because citric acid inhibits bubble coalescence, similar to the additives in Diet Coke. — Encyclopedia Britannica, 5 Aug. 2026

Deep-clean and descale a moka pot several times a year with vinegar or citric acid. — Jolie Kerr, Better Homes & Gardens, 29 July 2026

Godynuk suggests running a dishwasher cleaner or citric acid on an empty cycle, ideally once a month. — Ashley Chalmers, The Spruce, 25 July 2026

Word History

Etymology

International Scientific Vocabulary

First Known Use

1790, in the meaning defined above

Rhymes for citric acid

• antacid
• placid

Kids Definition

citric acid

noun

cit·​ric acid ˌsi-trik- 

: a pleasantly sour-tasting organic acid obtained especially from lemon and lime juices or by the chemical breakdown of sugars and used as a flavoring

Medical Definition

citric acid

noun

cit·​ric acid ˌsi-trik- 

: a sour organic acid C₆H₈O₇ occurring in cellular metabolism, obtained especially from lemon and lime juices or by fermentation of sugars, and used as a flavoring