fumaric acidPronunciation: /fjuːˈmarɪk/Definition of fumaric acid noun [mass noun] Chemistry a crystalline acid, isomeric with maleic acid, present in fumitory and many other plants. Alternative name: trans-butenedioic acid; chemical formula: HOOCCHCHCOOH Origin: mid 19th century: fumaric from modern Latin Fumaria 'fumitory' + -icfumaric acid in other Oxford dictionaries Definition of fumaric acid in the US English dictionary
