polyp

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.

A usually nonmalignant growth or tumor protruding from the mucous lining of an organ such as the nose, bladder, or intestine, sometimes causing obstruction.

In pathology, same as polypus, 2.

In zoology, an animal with many feet or foot-like processes,

One of the feeding or nutritive zooids of a hydroid or coral.

One of the Anthozoa.

Same as anthozoa. See anthozoa, madreporaria, hydroid.

the hydra.

that portion of the stem of a siphonophore which bears the polypites, or feeding zooids.

an abnormal growth protruding from a mucous membrane