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sigmoid flexure

Zoology. an S -shaped curve in a body part.
Also called sigmoid colon. an S -shaped curve of the large intestine between the descending colon and the rectum.
Origin of sigmoid flexure
First recorded in 1780-90 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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British Dictionary definitions for sigmoid flexure

sigmoid flexure

(zoology) an S-shaped curve, as in the necks of certain birds
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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sigmoid flexure in Medicine

sigmoid flexure n.
The S-shaped section of the colon between the pelvic brim and the third sacral segment, continuous with the rectum. Also called sigmoid colon.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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