[aw-toh-an-ti-bod-ee, -an-tee-]

noun, plural au·to·an·ti·bod·ies. Immunology.

an antibody that an organism produces against any of its own tissues, cells, or cell components.

Nearby words

  1. autoallergic hemolytic anemia,
  2. autoallergy,
  3. autoallogamy,
  4. autoanalysis,
  5. autoanalyzer,
  6. autoantigen,
  7. autobahn,
  8. autobio,
  9. autobiog,
  10. autobiographical

Origin of autoantibody

First recorded in 1905–10; auto-1 + antibody Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for autoantibody


noun plural -bodies

an antibody reacting with an antigen that is a part of the organism in which the antibody is formed
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medicine definitions for autoantibody




An antibody that attacks the cells, tissues, or native proteins of the organism in which it was formed.

The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Science definitions for autoantibody



An antibody that reacts with the cells, tissues, or native proteins of the individual in which it is produced. Autoimmune diseases are caused by the presence of autoantibodies.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.