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

Always run a patch test first, and avoid using on any materials that are sensitive to citric acid. — Ashley Chalmers, The Spruce, 22 July 2026

The citric acid slows oxidation while adding only a subtle flavor that pairs well with avocado. — Kait Hanson, Southern Living, 12 July 2026

Thanks to seven peptides, 13 brightening ingredients (like citric acid and caffeine), algae, ferulic acid, and teprenone. — Tamim Alnuweiri, InStyle, 2 July 2026

It’s made of ingredients like shea butter, seed butter, squalane, and citric acid, which nourish and moisturize the lips for hours. — Olivia Bria, Travel + Leisure, 10 June 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