au·​to·​an·​ti·​body ˌȯ-(ˌ)tō-ˈan-ti-ˌbä-dē How to pronounce autoantibody (audio)
: an antibody active against a tissue constituent of the individual producing it

Example Sentences

Recent Examples on the Web As seen in Figure 3, the administration of CAR T therapy also reduced autoantibody responses linked to rheumatoid tissue damage. William A. Haseltine, Forbes, 19 Dec. 2022 This protein appears on the surface of autoantibody-producing B cells. WIRED, 16 Sep. 2022 Those autoantibody levels increase throughout youth and adolescence and eventually plateau by adulthood. Melina Walling, The Arizona Republic, 2 July 2022 Those who carried high concentrations of autoantibodies were 5 times as likely to pass away from SARS-CoV-2 infection than female carriers at the same concentration, regardless of autoantibody combination and of age group. William A. Haseltine, Forbes, 21 June 2022 In adapting the technique to treat autoimmune disease, the team gave T cells a beacon derived from bits of the anti-DSG3 autoantibody, which leads the killers straight to anti-DSG3 B cells. Marla Broadfoot, Scientific American, 1 Sep. 2021 These cells are the actual agents of destruction, so scientists investigating autoimmunity look for these T cell–autoantibody pairs. Stephani Sutherland, Scientific American, 1 Sep. 2021 An autoantibody is an antibody produced by the immune system that is directed against one or more of the individual’s own proteins and can cause autoimmune diseases. Julie Washington, cleveland, 8 June 2021 The autoantibody hypothesis still warrants further research. Stephani Sutherland, Scientific American, 21 Jan. 2021 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'autoantibody.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Word History

First Known Use

1905, in the meaning defined above

Time Traveler
The first known use of autoantibody was in 1905

Dictionary Entries Near autoantibody

Cite this Entry

“Autoantibody.” Dictionary, Merriam-Webster, Accessed 25 Mar. 2023.

Medical Definition


au·​to·​an·​ti·​body ˌȯt-(ˌ)ō-ˈant-i-ˌbäd-ē How to pronounce autoantibody (audio)
plural autoantibodies
: an antibody active against a tissue constituent of the individual producing it

More from Merriam-Webster on autoantibody

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