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 Rather than looking to antibody tests, Dr. Fauci will rely on two major signs to figure out when the widespread administration of booster shots may be appropriate. Sarah Jacob, SELF, 2 July 2021 In regions where the Covid-19 rate was particularly high, there were daily antibody tests for workers entering the company’s brewing facilities. Jennifer Maloney, WSJ, 27 June 2021 Some doctors doubt the virus could have circulated unnoticed for so long, and say antibody tests can produce false positives. Washington Post, 23 June 2021 However, people who receive the vaccine may test positive on antibody tests. Caitlin O'kane, CBS News, 16 June 2021 The researchers employed two distinct antibody tests on 24,000 subjects who gave blood between Jan. 2 and March 18, 2020. Joel Achenbach, Anchorage Daily News, 15 June 2021 The antibody tests offer one way to correct official records and arrive at better estimates of total infections and deaths. New York Times, 25 May 2021 Some states reported antigen tests (or early on, antibody tests) combined with PCR-test data, some separated them out, and some states didn’t report them at all. Kara Schechtman, The Atlantic, 25 May 2021 In order to increase the numbers in Florida’s case count, Jones counts positive antibody tests as cases. Charles C. W. Cooke, National Review, 13 May 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

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The first known use of antibody was in 1894

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Dictionary Entries Near antibody

antiblastic

antibody

anti-Bolshevik

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Statistics for antibody

Last Updated

21 Jul 2021

Cite this Entry

“Antibody.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/antibody. Accessed 31 Jul. 2021.

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More Definitions for antibody

antibody

noun

English Language Learners Definition of antibody

medical : 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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