sigmoidoscopy
Concise Oxford English Dictionary © 2008 Oxford University Press:
sigmoidoscopy /ˌsɪgmɔɪˈdɒskəpi/
▶noun examination of the sigmoid colon by means of a flexible tube inserted through the anus.
– derivatives
sigmoidoscope noun,
sigmoidoscopic adjective.
sigmoidoscope noun,
sigmoidoscopic adjective.
'sigmoidoscopy' also found in these Oxford entries:

