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.
polyp. adenomatous polyp a benign neoplastic growth with variable malignant potential, representing proliferation of epithelial tissue in the lumen of the sigmoid colon, rectum, or stomach. juvenile polyps small, benign hemispheric hamartomas of the large intestine occurring sporadically in children.denomatous polyp a benign neoplastic growth with variable malignant potential, representing proliferation of epithelial tissue in the lumen of the sigmoid colon, rectum, or stomach.