poly·​pep·​tide | \ ˌpä-lē-ˈpep-ˌtīd How to pronounce polypeptide (audio) \

Definition of polypeptide

: a molecular chain of amino acids

Other Words from polypeptide

polypeptidic \ ˌpä-​lē-​(ˌ)pep-​ˈti-​dik How to pronounce polypeptide (audio) \ adjective

Examples of polypeptide in a Sentence

Recent Examples on the Web But Mounjaro targets a second hormone, the glucose-dependent insulinotropic polypeptide, as well. Matthew Herper, STAT, 14 May 2022 There are also polypeptide chains that are the sides of the ladder, connecting the rungs vertically. Kirbie Johnson, Allure, 8 Apr. 2022 Vitamin C derivative of choice is an ascorbic acid polypeptide. Adam Hurly, Robb Report, 26 Aug. 2021 The researchers found success using soy protein isolate—which has an entirely different molecular composition from spider silk—due to the fact that all proteins are comprised of polypeptide chains. Daisy Hernandez, Popular Mechanics, 14 June 2021 It is synthesized as part of two much longer polypeptides, the product of the initial long open reading frame (orf1a), and from the orf1b, the orf1ab polypeptide. William A. Haseltine, Forbes, 4 June 2021 Aviptadil is a synthetic form of human vasoactive intestinal polypeptide, which is highly concentrated in the lungs. Melissa Healystaff Writer, Los Angeles Times, 2 May 2020 That is seven more years those polypeptides would receive if they were approved under the rules for regular small-molecule drugs, such as pills. Jeff Stein, Washington Post, 20 Dec. 2019 In 2015, Krishnamurthy, Hud and their collaborators showed that trying to understand the origins of polypeptide synthesis by focusing only on amino acids, the building blocks of peptides, might be the wrong tack. Quanta Magazine, 16 Sep. 2019 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'polypeptide.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of polypeptide

1903, in the meaning defined above

History and Etymology for polypeptide

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Time Traveler for polypeptide

Time Traveler

The first known use of polypeptide was in 1903

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Last Updated

20 May 2022

Cite this Entry

“Polypeptide.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/polypeptide. Accessed 29 Jun. 2022.

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More Definitions for polypeptide


poly·​pep·​tide | \ ˌpäl-i-ˈpep-ˌtīd How to pronounce polypeptide (audio) \

Medical Definition of polypeptide

: a molecular chain of amino acids

Other Words from polypeptide

polypeptidic \ -​(ˌ)pep-​ˈtid-​ik How to pronounce polypeptide (audio) \ adjective

More from Merriam-Webster on polypeptide

Britannica.com: Encyclopedia article about polypeptide


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