/ Dictionary / Index C colonoscope: Meaning and Definition of Find definitions for: co•lon•o•scope Pronunciation: (kō-lon'u-skōp", ku-), [key] — n. Med. a flexible, lighted, tubular instrument using fiber optics to permit visualization of the colon. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: colonoscope (Thesaurus) colonnade colonus Related Content Daily Word Quiz: arboreal Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language