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

Word History and Origins

Origin of sigmoid flexure¹

First recorded in 1780–90