/ Dictionary / Index A autoantibody: Meaning and Definition of Find definitions for: au•to•an•ti•bod•y Pronunciation: (ô"tō-an'ti-bod"ē, -an'tē-), [key] — pl. -bod•ies. an antibody that an organism produces against any of its own tissues, cells, or cell components. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: autoantibody (Thesaurus) autoanalyzer autoantigen Related Content Daily Word Quiz: benevolent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language