WordReference Random House Unabridged Dictionary of American English © 2020
sig•moid•os•co•py  (sig′moi doskə pē),USA pronunciation n., pl.  -pies. 
  1. Medicinean examination by means of a sigmoidoscope.
  • sigmoidoscope + -y3 1895–1900

'sigmoidoscopy' also found in these entries:
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