sigmoid colon

noun

Definition of sigmoid colon 

: the contracted and crooked part of the colon immediately above the rectum

called also sigmoid flexure

First Known Use of sigmoid colon

1896, in the meaning defined above

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The first known use of sigmoid colon was in 1896

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sigmoid colon

noun

Medical Definition of sigmoid colon 

: the contracted and crooked part of the colon immediately above the rectum

called also pelvic colon, sigmoid flexure

More from Merriam-Webster on sigmoid colon

Britannica.com: Encyclopedia article about sigmoid colon

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