polyp(redirected from retention polyp)
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pedunculate polyp (top) and sessile polyp (bottom) in a section of large intestine
1. A body form of a cnidarian, such as a hydra or coral, that is cylindrical in shape, has a mouth usually surrounded by tentacles at one end, and is often attached to something at the other end.
2. A usually nonmalignant growth or tumor protruding from the mucous lining of an organ such as the nose, bladder, or intestine, sometimes causing obstruction.
[Middle English polip, nasal tumor, from Old French polipe, from Latin pōlypus, cuttlefish, nasal tumor, from Greek polupous, poulupous : polu-, poly- + pous, foot; see ped- in Indo-European roots.]
1. (Zoology) zoology one of the two forms of individual that occur in coelenterates. It usually has a hollow cylindrical body with a ring of tentacles around the mouth. Compare medusa2
2. (Pathology) pathol Also called: polypus a small vascularized growth arising from the surface of a mucous membrane, having a rounded base or a stalklike projection
[C16 polip, from French polype nasal polyp, from Latin pōlypus sea animal, nasal polyp, from Greek polupous having many feet]
1. the cylindrical body form in the life cycle of a jellyfish, sea anemone, or other cnidarian, having stinging tentacles around the mouth and usu. having the opposite end attached to a surface. Compare medusa.
2. the individual zooid of a colonial organism, as the bryozoan.
3. a projecting growth from a mucous surface, as of the nose, being either a tumor or a hypertrophy of the mucous membrane.
[1350–1400; Middle English polip, short for polipus nasal tumor < Medieval Latin, Latin pōlypus < dial. Greek poulýpous octopus, nasal tumor (Attic polýpous, genitive polýpodos; see poly-, -pod)]
A cnidarian in its sedentary stage. Polyps have hollow, tube-shaped bodies with a central mouth on top surrounded by tentacles. Some cnidarians, such as corals and sea anemones, only exist as polyps, while others turn into medusas as adults or lack a polyp stage completely. Compare medusa.
A tissue growth projecting from the skin or mucous membrane, such as inside the nose.
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|Noun||1.||polyp - a small vascular growth on the surface of a mucous membrane|
growth - (pathology) an abnormal proliferation of tissue (as in a tumor)
adenomatous polyp - a polyp that consists of benign neoplastic tissue derived from glandular epithelium; "adenomatous polyps are visible protrusions that can develop on the mucosal surface of the colon or rectum"
sessile polyp - a relatively flat polyp
pedunculated polyp - a polyp with a stalk or peduncle
|2.||polyp - 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"|
Cnidaria, Coelenterata, phylum Cnidaria, phylum Coelenterata - hydras; polyps; jellyfishes; sea anemones; corals
polyp[ˈpɒlɪp] N (Med) → pólipo m
polyp[ˈpɒlɪp] n → polype m
n → Polyp m
polyp[ˈpɒlɪp] n (Zool, Med) → polipo
n. pólipo, cualquier protuberancia o bulto que se desarrolla de una membrana mucosa.