/ Dictionary / Index I internist: Meaning and Definition of Find definitions for: in•tern•ist Pronunciation: (in'tûr-nist, in-tûr'nist), [key] — n. a physician specializing in the diagnosis and nonsurgical treatment of diseases, esp. of adults. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: internist (Thesaurus) interneuron internment Related Content Daily Word Quiz: acquiesce Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language