snub. (mining engineering). To increase the height of an undercut by means of explosives or otherwise. To check the descent of a car by the turn of a rope around a post.
Sessile polyps simply mean that the mass is flat and does not have a stalk. The other types of colonic polyps are pedunculated- these are not flat but attached to a stalk. Since a sessile colonic polyp does not have a stalk, it is usually found very close to the colonic wall lining.
Polyps of the Colon and Rectum | ASCRS. Polyps are abnormal growths rising from the lining of the large intestine (colon or rectum) and protruding into the intestinal canal (lumen). Some polyps are flat; others have a stalk. Polyps are one of the most common conditions affecting the colon and rectum, occurring in 15 to 20 percent of the adult population.