1. a sedentary type of animal form characterized by a more or less fixed base, columnar body, and free end with mouth and tentacles, especially as applied to coelenterates.
  2. an individual zooid of a compound or colonial organism.
Pathology. a projecting growth from a mucous surface, as of the nose, being either a tumor or a hypertrophy of the mucous membrane.

Origin of polyp

1350–1400; Middle English polip, short for polipus nasal tumor (later, also cephalopod, now obsolete) < Medieval Latin, Latin pōlypus < dialectal Greek poulýpous octopus, nasal tumor (Attic polýpous, genitive polýpodos; see poly-, -pod)
Related formspol·yp·ous, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Related Words for polyp

tumor, hydra, coral, coelenterate, anemone, hydroid

Examples from the Web for polyp

Contemporary Examples of polyp

Historical Examples of polyp

British Dictionary definitions for polyp



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 mouthCompare medusa (def. 2)
Also called: polypus pathol a small vascularized growth arising from the surface of a mucous membrane, having a rounded base or a stalklike projection
Derived Formspolypous, adjective

Word Origin for polyp

C16 polip, from French polype nasal polyp, from Latin pōlypus sea animal, nasal polyp, from Greek polupous having many feet
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for polyp

c.1400, "nasal tumor," from Middle French polype and directly from Latin polypus "cuttlefish," also "nasal tumor," from Greek (Doric, Aeolic) polypos "octopus, cuttlefish," from polys "many" (see poly-) + pous "foot" (see foot (n.)). Etymological sense revived 1742 as a name for hydras and sea anemones (earlier polypus, early 16c.). The Latin word is the source of French poulpe "octopus."

Online Etymology Dictionary, © 2010 Douglas Harper

polyp in Medicine




A usually nonmalignant growth of tissue protruding from the mucous lining of an organ such as the nose, bladder, or intestine, often causing obstruction.polypus
Related formspolyp•oid′ adj.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

polyp in Science



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 after their larval stage, while others turn into medusas as adults or lack a polyp stage completely. Compare medusa.
An abnormal growth extending from a mucous membrane, as of the intestine.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.