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polyp    音标拼音: [p'ɑləp]
n. 水螅,鼻肉,鼻息肉

水螅,鼻肉,鼻息肉

polyp
n 1: a small vascular growth on the surface of a mucous membrane
[synonym: {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"

Polyp \Pol"yp\, n. [L. polypus, Gr. ?, ?, literally,
many-footed; poly`s many ?, ?, foot: cf. F. polype. See
{Poly-} and {Foot}, and cf. {Polypode}, {Polypody}, {Poulp}.]
(Zool.)
(a) One of the feeding or nutritive zooids of a hydroid or
coral.
(b) One of the Anthozoa.
(c) pl. Same as {Anthozoa}. See {Anthozoa}, {Madreporaria},
{Hydroid}. [Written also {polype}.]
[1913 Webster]

{Fresh-water polyp}, the hydra.

{Polyp stem} (Zool.), that portion of the stem of a
siphonophore which bears the polypites, or feeding zooids.
[1913 Webster]


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