Found in the following dictionaries
SOWPODS (Collins Scrabble Words)
OTCWL2014 (NASPA Word List 2014)
OTCWL2014 (NASPA Word List 2014)
"Sigmoidoscope" Definition
noun
A tubular instrument for visual examination of the sigmoid colon.
Source: American Heritage Dictionary
An endoscope designed to be passed through the anus for visual examination especially of the colon.
Source: Merriam-Webster
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