polyp

/ˈpɑləp/

/ˈpɒlɪp/

Other forms: polyps

Definitions of polyp

1. noun

   a small vascular growth on the surface of a mucous membrane
   synonyms: polypus

   types:

   adenomatous polyp

   a polyp that consists of benign neoplastic tissue derived from glandular epithelium

   sessile polyp

   a relatively flat polyp

   pedunculated polyp

   a polyp with a stalk or peduncle

   type of:

   growth

   (pathology) an abnormal proliferation of tissue (as in a tumor)
2. noun

   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”

   type of:

   cnidarian, coelenterate

   radially symmetrical animals having saclike bodies with only one opening and tentacles with stinging structures; they occur in polyp and medusa forms