antibody

noun
an·​ti·​body | \ ˈan-ti-ˌbä-dē How to pronounce antibody (audio) \

Definition of antibody

: any of a large number of proteins of high molecular weight that are produced normally by specialized B cells after stimulation by an antigen and act specifically against the antigen in an immune response, that are produced abnormally by some cancer cells, and that typically consist of four subunits including two heavy chains and two light chains

called also immunoglobulin

Examples of antibody in a Sentence

Recent Examples on the Web Chin-Hong said immunity may wear off sooner in older people, and immunocompromised individuals may not get the full antibody response. Kellie Hwang, San Francisco Chronicle, 5 Oct. 2021 Earlier this week Pfizer released the results of a trial showing its COVID vaccine was safe and generated a robust antibody response in children ages 5 to 11. oregonlive, 24 Sep. 2021 On Monday morning, Pfizer announced that its Covid-19 vaccine for 5- to 11-year-old children is safe and resulted in a robust antibody response. Eliza Mackintosh, CNN, 22 Sep. 2021 The makers of the Pfizer-BioNTech vaccine announced Monday that children 5 to 11 generated a robust antibody response based on their trial using a lower dose. Laura Garcia, San Antonio Express-News, 20 Sep. 2021 The antibody response in children was roughly comparable to the response in participants ages 16 to 25. Matthew Herper, STAT, 20 Sep. 2021 The trial involves 84 people given two doses of Sinovac’s shot who didn’t generate an adequate antibody response. Felix Tam, Fortune, 17 Sep. 2021 Evidence of the booster’s antibody response is promising—but early. Corryn Wetzel, Smithsonian Magazine, 28 Aug. 2021 Only 17% of people mounted a detectable antibody response 20 days after the first mRNA vaccine dose or to the Johnson & Johnson vaccine. Tara C. Smith, SELF, 27 Aug. 2021

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'antibody.' 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 antibody

1894, in the meaning defined above

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Time Traveler for antibody

Time Traveler

The first known use of antibody was in 1894

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Dictionary Entries Near antibody

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anti-Bolshevik

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Statistics for antibody

Last Updated

13 Oct 2021

Cite this Entry

“Antibody.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/antibody. Accessed 22 Oct. 2021.

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More Definitions for antibody

antibody

noun

English Language Learners Definition of antibody

: a substance produced by the body to fight disease

antibody

noun
an·​ti·​body | \ ˈan-ti-ˌbä-dē How to pronounce antibody (audio) \
plural antibodies

Kids Definition of antibody

: a substance produced by special cells of the body that counteracts the effects of a disease germ or its poisons

antibody

noun
an·​ti·​body | \ ˈant-i-ˌbäd-ē How to pronounce antibody (audio) \
plural antibodies

Medical Definition of antibody

: any of a large number of proteins of high molecular weight that are produced normally by specialized B cells after stimulation by an antigen and act specifically against the antigen in an immune response, that are produced abnormally by some cancer cells, and that typically consist of four subunits including two heavy chains and two light chains

called also immunoglobulin

More from Merriam-Webster on antibody

Nglish: Translation of antibody for Spanish Speakers

Britannica.com: Encyclopedia article about antibody

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