/ Dictionary / Index A autoimmune: Meaning and Definition of Find definitions for: au•to•im•mune Pronunciation: (ô"tō-i-myn'), [key] — adj. Immunol. of or pertaining to the immune response of an organism against any of its own tissues, cells, or cell components. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: autoimmune (Thesaurus) autoignition point autoimmune disease Related Content Daily Word Quiz: dissonant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language