Polyp - Definition

n 1: a small vascular growth on the surface of a mucous membrane
[syn: polyp, polypus]
2: one of two forms that coelenterates take (e.g. a hydra or
coral): usually sedentary with a hollow cylindrical body
usually with a ring of tentacles around the mouth; "in some
species of coelenterate, polyps are a phase in the life cycle
that alternates with a medusoid phase"