autoantibody

noun

au·​to·​an·​ti·​body ˌȯ-(ˌ)tō-ˈan-ti-ˌbä-dē 

: an antibody active against a tissue constituent of the individual producing it

Examples of autoantibody in a Sentence

Recent Examples on the Web

Currently, screening for Type 1 diabetes typically relies on genetic testing and testing for the presence of autoantibodies, which are proteins that indicate the body is attacking insulin-producing cells. —Angelica P. Ahrens, The Conversation, 21 Apr. 2026

Patients may feel well while their bloodwork still shows abnormal autoantibodies or complement levels—subtle signals that the immune system remains activated. —Lauryn Higgins, Flow Space, 13 Mar. 2026

This includes the child’s age and other factors like the presence of proteins called islet autoantibodies in the bloodstream. —Dr. Brittany Bruggeman, Boston Herald, 16 Nov. 2025

This chronic inflammation may be caused by lingering traces of virus in the body or by misdirected antibodies, known as autoantibodies, that attack a person’s own cells and tissues. —Emily Mullin, Wired News, 14 Nov. 2025

Word History

Etymology

auto- + antibody

First Known Use

1905, in the meaning defined above

Rhymes for autoantibody

• passamaquoddy
• afterbody
• antibody
• busybody
• everybody
• bawdy
• body
• gaudy
• khadi
• mahdi
• noddy
• oddi

Medical Definition

autoantibody

noun

au·​to·​an·​ti·​body ˌȯt-(ˌ)ō-ˈant-i-ˌbäd-ē 

plural autoantibodies

: an antibody active against a tissue constituent of the individual producing it