Maillard reaction

noun

Mail·​lard reaction mə-ˈlärd- How to pronounce Maillard reaction (audio)
-ˈyär-
: a nonenzymatic reaction between sugars and proteins that occurs upon heating and that produces browning of some foods (such as meat and bread)

Examples of Maillard reaction in a Sentence

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At the same time, Maillard reactions between sugars and amino acids – which make up proteins – create new compounds, including brown pigments called melanoidins and a range of flavor compounds. Mavra Javed, The Conversation, 24 Apr. 2026

Word History

Etymology

Louis-Camille Maillard †1936 French biochemist

First Known Use

1929, in the meaning defined above

Time Traveler
The first known use of Maillard reaction was in 1929

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Cite this Entry

“Maillard reaction.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Maillard%20reaction. Accessed 2 May. 2026.

Medical Definition

Maillard reaction

noun
Mail·​lard reaction mə-ˈlärd-, -ˈyär- How to pronounce Maillard reaction (audio)
: a nonenzymatic reaction between sugars and proteins that occurs upon heating and that produces browning of some foods (as meat and bread)

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