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.
(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.
sigmoidectomy sig·moid·ec·to·my (sĭg’moi-děk’tə-mē) n. Excision of the sigmoid colon.
- Sigmoid artery
sigmoid artery n. Any of the arteries with their origin in the inferior mesenteric artery, with distribution to the descending colon and sigmoid flexure, and with anastomoses to the left colic and superior rectal arteries.
adjective 1. shaped like the letter C. 2. shaped like the letter S. 3. of, relating to, or situated near the sigmoid flexure of the large intestine. adjective 1. shaped like the letter S 2. of or relating to the sigmoid colon of the large intestine noun 3. See sigmoid colon sigmoid sig·moid (sĭg’moid’) or […]
noun, plural signories. 1. seigniory. noun, plural seigniories. 1. the power or authority of a seignior. 2. History/Historical. a lord’s domain. noun (pl) -gnories 1. a variant spelling of seigniory noun (pl) -gniories, -gnories 1. less common names for a seigneury 2. (in England) the fee or manor of a seignior; a feudal domain 3. […]
noun 1. an act, instance, or time of signing out.