fumaric acid
noun
fu·mar·ic acid
fyu̇-ˈmer-ik- 
-ˈma-rik-
: a crystalline acid C4H4O4 found in various plants or made synthetically
Examples of fumaric acid in a Sentence
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This supplement does come with a longer ingredient list compared to other products on our list, including citric acid and fumaric acid.
—
Anne Cook Carroll, Ms, Parents, 3 Aug. 2023
The therapeutic, known as S-217622 or ensitrelvir fumaric acid, was discovered by researchers at Hokkaido University in Japan.
—Aidin Vaziri, San Francisco Chronicle, 16 Feb. 2023
Tests proved him right. Spraying experimental rice plants with artificial acid rain immediately cut their release into the soil of three relevant bacterial foodstuffs—fumaric acid, galactose and glucose.
—The Economist, 12 July 2018
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Anne Cook Carroll, Ms, Parents, 3 Aug. 2023
The therapeutic, known as S-217622 or ensitrelvir fumaric acid, was discovered by researchers at Hokkaido University in Japan.
—Aidin Vaziri, San Francisco Chronicle, 16 Feb. 2023
Tests proved him right. Spraying experimental rice plants with artificial acid rain immediately cut their release into the soil of three relevant bacterial foodstuffs—fumaric acid, galactose and glucose.
—The Economist, 12 July 2018
Cite this Entry
“Fumaric acid.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/fumaric%20acid. Accessed 2 Jul. 2025.
Copy CitationMedical Definition
fumaric acid
noun
fu·mar·ic acid
fyu̇-ˌmar-ik-
: a crystalline acid C4H4O4 formed from succinic acid as an intermediate in the Krebs cycle
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