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polyp

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pol⋅yp

  [pol-ip]
–noun
1. Zoology.
a. a sedentary type of animal form characterized by a more or less fixed base, columnar body, and free end with mouth and tentacles, esp. as applied to coelenterates.
b. an individual zooid of a compound or colonial organism.
2. Pathology. a projecting growth from a mucous surface, as of the nose, being either a tumor or a hypertrophy of the mucous membrane.
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Origin:
1350–1400; ME polip, short for polipus nasal tumor (later, also cephalopod, now obs.) < ML, L pōlypus < dial. Gk poulýpous octopus, nasal tumor (Attic polýpous, gen. polýpodos; see poly-, -pod )

Related forms:
pol⋅yp⋅ous, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2010.
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pol·yp   (pŏl'ĭp)   
n.  

  1. A coelenterate, such as a hydra or coral, having a cylindrical body and an oral opening usually surrounded by tentacles.

  2. A usually nonmalignant growth or tumor protruding from the mucous lining of an organ such as the nose, bladder, or intestine, often 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.]
pol'yp·oid' adj.
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Word Origin & History

polyp 
c.1400, "nasal tumor," from L. polypus "cuttlefish," also "nasal tumor," from Gk. (Doric, Aeolic) polypos "octopus, cuttlefish," from polys "many" (see plenary) + pous "foot." Sense extended 1742 to hydras and sea anemones (earlier polypus, c.1520).
Online Etymology Dictionary, © 2001 Douglas Harper
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Medical Dictionary

Main Entry: pol·yp
Pronunciation: 'päl-&p
Function: noun
: a projecting mass of swollen and hypertrophied or tumorous membrane (as in thenasal cavity or the intestine) called also polypus
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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polyp pol·yp (pŏl'ĭp)
n.
A usually nonmalignant growth of tissue protruding from the mucous lining of an organ such as the nose, bladder, or intestine, often causing obstruction. Also called polypus.

pol'yp·oid' adj.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Science Dictionary
polyp   (pŏl'ĭp)  Pronunciation Key 

  1. 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.

  2. An abnormal growth extending from a mucous membrane, as of the intestine.


The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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