antibody

noun

an·​ti·​body ˈan-ti-ˌbä-dē How to pronounce antibody (audio)
: 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
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Some children are more likely to have an infection from strep bacteria because of a low antibody response to the infection.4 Your body's immune system works to defend you from illnesses. Brandi Jones, Msn-Ed, Health, 26 Dec. 2024 The independent Russian news outlet The Moscow Times first reported in 2020 that Spector was listed alongside three Russian nationals by the European Patent Office office as the inventors of an antibody that can be used for treating cancer. Andy Biggs, Newsweek, 24 Dec. 2024 The virus has either been isolated from these creatures or antibodies have been found in their systems. Geraldine Castro, WIRED, 20 Dec. 2024 The new study, however, also looked into when the drop in antibodies increases the risk of reinfection—and sometimes that may not occur in three months. Fran Kritz, Verywell Health, 9 Dec. 2024 See all Example Sentences for antibody 

Word History

First Known Use

1894, in the meaning defined above

Time Traveler
The first known use of antibody was in 1894

Dictionary Entries Near antibody

Cite this Entry

“Antibody.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/antibody. Accessed 30 Dec. 2024.

Kids Definition

antibody

noun
an·​ti·​body ˈant-i-ˌbäd-ē How to pronounce antibody (audio)
: a substance produced by special cells of the body that combines with an antigen and counteracts its effects or those of the microscopic plant or animal on which the antigen may occur

Medical Definition

antibody

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

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