hem·​ag·​glu·​ti·​nin | \ ˌhē-mə-ˈglü-tə-nən How to pronounce hemagglutinin (audio) \

Definition of hemagglutinin

: an agglutinin (such as an antibody or viral capsid protein) that causes hemagglutination

Examples of hemagglutinin in a Sentence

Recent Examples on the Web

Those harmful mutations make hemagglutinin less stable and thus less able to open up cells for invasion. Quanta Magazine, "The New Science of Evolutionary Forecasting," 17 July 2014 There are 18 different hemagglutinin subtypes and 11 different N subtypes, leading to nomenclature like H3N1. Diana Gitig, Ars Technica, "Llama “nanobodies” might grant universal flu protection," 5 Nov. 2018 Researchers had to manually assess the sequences for differences, focusing on regions known to be important for transmission such as hemagglutinin, the protein that binds the virus to the host cell. Quanta Magazine, "Decoding Flu Viruses Before an Outbreak," 29 Aug. 2013 Your yearly flu vaccine targets hemagglutinin, one of the two types of proteins that cover the influenza virus. Debbie Ponchner, Scientific American, "New Finding Advances the Search for a Universal Flu Vaccine," 3 June 2019 Current flu vaccines generate antibodies to the head of the hemagglutinin protein, which is highly variable. Diana Gitig, Ars Technica, "Llama “nanobodies” might grant universal flu protection," 5 Nov. 2018 Antibodies to the hemagglutinin prevent the virus from binding to cells and, therefore, prevent infection. Paul A. Offit, Philly.com, "The Philly vaccine pioneer who saved thousands from flu, and predicted the next pandemic," 23 Jan. 2018 But there are at least 18 hemagglutinins — the surface protein that gives influenza A viruses their H number — and 11 neuraminidases, the N component. Helen Branswell, STAT, "With cash and a call for new ideas, Bill Gates tries to boost the campaign for a universal flu vaccine," 27 Apr. 2018 One strategy is to target a protein on the virus’s outer surface called hemagglutinin, which the bug uses to invade cells. Chelsea Leu, WIRED, "How Science Is Solving Health Issues at All Stages of Life," 27 Mar. 2018

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

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First Known Use of hemagglutinin

circa 1903, in the meaning defined above

History and Etymology for hemagglutinin

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The first known use of hemagglutinin was circa 1903

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hem·​ag·​glu·​ti·​nin | \ ˌhē-mə-ˈglüt-ᵊn-ən How to pronounce hemagglutinin (audio) \
variants: also hemoagglutinin \ ˌhē-​mō-​ə-​ How to pronounce hemoagglutinin (audio) \ or chiefly British haemagglutinin also haemoagglutinin

Medical Definition of hemagglutinin

: an agglutinin (as an antibody or viral capsid protein) that causes hemagglutination abbreviation HA — compare leukoagglutinin

More from Merriam-Webster on hemagglutinin

Britannica.com: Encyclopedia article about hemagglutinin

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miscellaneous remnants or debris

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