WordReference Random House Unabridged Dictionary of American English © 2025
fumar′ic ac′id,
- Chemistrya colorless, odorless, crystalline, slightly water-soluble solid, C4H4O4, isomeric with maleic acid, essential to cellular respiration in most eukaryotic organisms: used in the making of synthetic resins and as a replacement for tartaric acid in beverages and baking powders. Also called boletic acid, lichenic acid.
- 1875–80
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