one of several feeding zooids, or polyps, of a coral, hydroid, or siphonophore; a hydranth. See Illust. of campanularian.
Sometimes, the manubrium of a hydroid medusa.
A fossil coral.
the essential take into account the dwelling of a polyp, as a hydrozoan or an actinozoan; an individual zoöid of a compound polyp; among people or individuals which collectively fabricate and constitute a polyp-stock or polypary; a hydranth.