Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. An organic acid, C4H4O4, found in various plants and produced synthetically and used mainly in resins, paints, varnishes, and inks.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. an unsaturated organic dicarboxylic acid, HOOCCH=CHCOOH, the geometric isomer of maleic acid from which it may be prepared by heating; it is found in many plants, including fungi and mosses, and is essential in the chemistry of respiration; it has a number of industrial applications, and its esters, the fumarates are used in the treatment of psoriasis

from the GNU version of the Collaborative International Dictionary of English

  • adj. a widely occurring organic acid, extracted from fumitory as a white crystallline substance, C2H2(CO2H)2, and produced artificially in many ways, as by the distillation of malic acid; boletic acid. It is found also in the lichen, Iceland moss, and hence was also called lichenic acid.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. a colorless crystalline acid with a fruity taste; used in making polyester resins

Etymologies

From New Latin Fūmāria, genus of herbaceous plants (from Late Latin fūmāria, fumitory, from Latin fūmus, smoke) + -ic.
(American Heritage® Dictionary of the English Language, Fourth Edition)

Examples

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