maleic acid

noun (1)
ma·​le·​ic acid | \ mə-ˈlē-ik- How to pronounce maleic acid (audio) , -ˈlā-\

Definition of maleic acid

 (Entry 1 of 3)

: a crystalline dicarboxylic acid C4H4O4 that is isomeric with fumaric acid and is used especially in organic synthesis

maleic anhydride

noun (2)

Definition of maleic anhydride (Entry 2 of 3)

: a caustic crystalline cyclic anhydride C4H2O3 used especially in making resins

maleic hydrazide

noun (3)

Definition of maleic hydrazide (Entry 3 of 3)

: a crystalline cyclic hydrazide C4H4N2O2 used to retard plant growth

First Known Use of maleic acid

Noun (1)

1838, in the meaning defined above

Noun (2)

1857, in the meaning defined above

Noun (3)

1949, in the meaning defined above

History and Etymology for maleic acid

Noun (1)

French acide maléique, alteration of acide malique malic acid; from its formation by dehydration of malic acid

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The first known use of maleic acid was in 1838

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More Definitions for maleic acid

maleic acid

noun
ma·​le·​ic acid | \ mə-ˌlē-ik- How to pronounce maleic acid (audio) , -ˌlā- How to pronounce maleic acid (audio) \

Medical Definition of maleic acid

: a crystalline dicarboxylic acid C4H4O4 that is isomeric with fumaric acid and is used especially in organic synthesis

More from Merriam-Webster on maleic acid

Britannica.com: Encyclopedia article about maleic acid

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