Sigmoid-flexure
noun
1.
Zoology. an S -shaped curve in a body part.
2.
Also called sigmoid colon. an S -shaped curve of the large intestine between the descending colon and the rectum.
sigmoid flexure
noun
1.
(zoology) an S-shaped curve, as in the necks of certain birds
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.
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