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.
Origin
1780-90
British Dictionary definitions for sigmoid colon

sigmoid colon

noun
1.
the S-shaped bend in the final portion of the large intestine that leads to the rectum Also called sigmoid flexure

sigmoid flexure

noun
1.
(zoology) an S-shaped curve, as in the necks of certain birds
sigmoid colon in Medicine

sigmoid colon n.
See sigmoid flexure.

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.