Definition of citric acid in US English:

citric acid


  • A sharp-tasting crystalline acid present in the juice of lemons and other sour fruits. It is made commercially by the fermentation of sugar and used as a flavoring and setting agent.

    A tribasic acid; chemical formula: C₆H₈O₇

    • ‘These acids include vinegar, muriatic acid, or citric acid.’
    • ‘Keep the purée on a fire and when the water has reduced, add the sugar, citric acid and glucose.’
    • ‘Most mixtures of low-acid and acid foods also have pH values above 4.6 unless their recipes include enough lemon juice, citric acid, or vinegar to make them acid foods.’
    • ‘Place the sugar, citric acid and tartaric acid in a large bowl (non-metallic is probably best).’
    • ‘Addition of an acid such as citric acid (found in lemon juice) or cream of tartar (which contains tartaric acid) also enhances inversion.’


citric acid

/ˌsɪtrɪk ˈæsəd//ˌsitrik ˈasəd/