sigmoidoscopy sigmoidoscope • sigmoidostomy · · · Info · Definitions · Synonyms · Characters · · sigmoidoscopy · · Text Latin · · Script 13 · · Length 5 · · Syllables Definitions · · · (noun) visual examination (with a sigmoidoscope) of the lower third of the colon in a search for polyps. Synonyms: flexible sigmoidoscopy. · · Noun Definition 1 Synonyms · · · flexible sigmoidoscopy · · Synonym 1 Characters · · c latin small letter c U+0063 d latin small letter d U+0064 g latin small letter g U+0067 i latin small letter i U+0069 m latin small letter m U+006D o latin small letter o U+006F p latin small letter p U+0070 s latin small letter s U+0073 y latin small letter y U+0079