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 To gain access to a host’s cells, influenza uses its own viral glycoprotein, hemagglutinin (H). Quanta Magazine, 25 Feb. 2020 Viral code The Hs and Ns refer to hemagglutinin (Ha or H) and neuraminidase (Na or N), respectively, which are both viral molecules that hang on the outside of viral particles. Beth Mole, Ars Technica, 10 Dec. 2019 Krammer used a novel assay to measure the hemagglutinin stalk antibodies. Debbie Ponchner, Scientific American, 3 June 2019 Current flu vaccines induce the production of antibodies that recognize the hemagglutinin head and inhibit its ability to mediate viral entry into a cell. Debbie Ponchner, Scientific American, 3 June 2019 Scientists have been sequencing hemagglutinin genes from flu seasons for more than 40 years. Quanta Magazine, 17 July 2014 Those harmful mutations make hemagglutinin less stable and thus less able to open up cells for invasion. Quanta Magazine, 17 July 2014 There are 18 different hemagglutinin subtypes and 11 different N subtypes, leading to nomenclature like H3N1. Diana Gitig, Ars Technica, 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, 29 Aug. 2013

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

International Scientific Vocabulary

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Time Traveler for hemagglutinin

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The first known use of hemagglutinin was circa 1903

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Cite this Entry

“Hemagglutinin.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hemagglutinin. Accessed 30 Nov. 2021.

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More Definitions for hemagglutinin


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