maleic acid ma·le·ic acid (mə-lē'ĭk)
A colorless crystalline dibasic acid that is an isomer of fumaric acid and is used as an oil and fat preservative.
|maleic acid (mə-lē'ĭk) Pronunciation Key
A colorless crystalline acid used in textile processing and as an oil and fat preservative. Maleic acid is a geometric isomer of fumaric acid, having two carboxyl groups (COOH) on the same side of an ethylene chain. Chemical formula: C4H4O4.