dipeptide

noun

di·​pep·​tide (ˌ)dī-ˈpep-ˌtīd How to pronounce dipeptide (audio)
: a peptide that yields two molecules of amino acid on hydrolysis

Examples of dipeptide in a Sentence

Recent Examples on the Web
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Even before patients develop signs of dementia, the C9orf72 mutation produces abnormal proteins called dipeptide repeats, which aggregate inside brain cells. Adeline Goss, New Yorker, 11 June 2026 With botanical extracts, hyaluronic acid, and a calming dipeptide, this mask deeply hydrates, reduces redness, and relieves sensitivity—perfect for keeping skin balanced and healthy during long trips. Shivani Vora, Forbes, 29 Nov. 2024 Sales realization of its potential dipeptide and tripeptide manufacturing business may begin only from 2H FY 2025 or early FY 2026, the analysts add. WSJ, 7 Nov. 2023 Carnosine is a dipeptide produced by beta-alanine that inhibits the formation of lactic acid in your muscles during exercise. Amber Smith, Discover Magazine, 17 Oct. 2022

Word History

First Known Use

1903, in the meaning defined above

Time Traveler
The first known use of dipeptide was in 1903

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Cite this Entry

“Dipeptide.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/dipeptide. Accessed 3 Jul. 2026.

Medical Definition

dipeptide

noun
di·​pep·​tide (ˈ)dī-ˈpep-ˌtīd How to pronounce dipeptide (audio)
: a peptide that yields two molecules of amino acid on hydrolysis
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