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What is "sigmoid flexure"

The Collaborative International Dictionary
Sigmoid flexure

Sigmoid \Sig"moid\, Sigmoidal \Sig*moid"al\, a. [Gr. ???; ??? sigma + e'i^dos form, likeness: cf. F. sigmo["i]de.] Curved in two directions, like the letter S, or the Greek [sigmat].

Sigmoid flexure (Anat.), the last curve of the colon before it terminates in the rectum. See Illust. under Digestive.

Sigmoid valves. (Anat.) See Semilunar valves, under Semilunar.

Wiktionary
sigmoid flexure

n. sigmoid colon

WordNet
sigmoid flexure

n. the s-shaped curve between the descending colon and the rectum [syn: sigmoid colon]

Usage examples of "sigmoid flexure".

What gross colonic events, may I ask, are taking place in the area of my sigmoid flexure, Softly thought, stressing to himself the importance of such inquiries, Mainwar&igrave.