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A colorless crystalline acid, the cis-isomer of C4H4O4, used in textile processing and as an oil and fat preservative.
[From French acide maléique, alteration of acide malique, malic acid; see malic acid.]
(Elements & Compounds) a colourless soluble crystalline substance used to synthesize other compounds. Formula: HOOCCH:CHCOOH. Systematic name: cis-butanedioic acid
[C19: from French maléique, altered form of malique; see malic acid]
ma•le′ic ac′id(məˈli ɪk)
a colorless, crystalline, water-soluble solid, C4H4O4, used to make synthetic resins and to dye textiles.
[1870–75; < French maléique, alter. of malique malic]
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|Noun||1.||maleic acid - a colorless crystalline compound found in unripe fruit (such as apples or tomatoes or cherries) and used mainly to make polyester resins|
acid - any of various water-soluble compounds having a sour taste and capable of turning litmus red and reacting with a base to form a salt