antibody
noun
an·ti·body
ˈan-ti-ˌbä-dē 
: 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
Researchers found that those who tested positive for EBV VCA-IgA antibodies were nearly five times as likely to develop cancer compared with individuals who tested negative.
—
Jasmine Laws, MSNBC Newsweek, 10 July 2025
Because vaccines wane, even people vaccinated as children might not have enough antibodies.
—Nicole Villalpando, Austin American Statesman, 2 July 2025
Botox resistance can also occur, which is an immune response that causes the body to develop antibodies that fight off the toxin.
—Angelica Bottaro, Verywell Health, 2 July 2025
Monoclonal antibodies are proteins manufactured in a lab and mimic the antibodies the body naturally creates when fighting an infection.
—Mary Kekatos, ABC News, 25 June 2025
See All Example Sentences for antibody
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Jasmine Laws, MSNBC Newsweek, 10 July 2025
Because vaccines wane, even people vaccinated as children might not have enough antibodies.
—Nicole Villalpando, Austin American Statesman, 2 July 2025
Botox resistance can also occur, which is an immune response that causes the body to develop antibodies that fight off the toxin.
—Angelica Bottaro, Verywell Health, 2 July 2025
Monoclonal antibodies are proteins manufactured in a lab and mimic the antibodies the body naturally creates when fighting an infection.
—Mary Kekatos, ABC News, 25 June 2025
See All Example Sentences for antibody
Cite this Entry
“Antibody.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/antibody. Accessed 16 Jul. 2025.
Copy CitationKids Definition
antibody
noun
an·ti·body
ˈant-i-ˌbäd-ē
: 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
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
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