sigmoidoscope
noun
sig·moid·o·scope sig-ˈmȯi-də-ˌskōp 
: an endoscope designed to be passed through the anus for visual examination especially of the sigmoid colon
sigmoidoscopic
sig-ˌmȯi-də-ˈskä-pik
adjective sigmoidoscopy
sig-ˌmȯi-ˈdä-skə-pē
noun 
Word History
First Known Use
circa 1900, in the meaning defined above
Medical Definition
sigmoidoscope
noun
sig·moid·o·scope sig-ˈmȯid-ə-ˌskōp
: an endoscope designed to be passed through the anus in order to permit inspection, diagnosis, treatment, and photography especially of the sigmoid colon
called also proctosigmoidoscope