{ } n. [ Gr. &unr_; flowery + &unr_; animal + -oid. See Zooid. ] (Bot.) One of the mobile male reproductive bodies in the antheridia of cryptogams. [ 1913 Webster ]
n. [ Gr. da`ktylos finger + E. zooid. ] (Zool.) A kind of zooid of Siphonophora which has an elongated or even vermiform body, with one tentacle, but no mouth. See Siphonophora. [ 1913 Webster ]
n. [ Gr. &unr_; second + E. zooid. ] (Zool.) One of the secondary, and usually sexual, zooids produced by budding or fission from the primary zooids, in animals having alternate generations. In the tapeworms, the joints are deuterozooids. [ 1913 Webster ]
n. [ Gr. &unr_; offspring + E. zooid. ] (Zool.) A sexual zooid, or medusoid bud of a hydroid; a gonophore. See Hydroidea, and Illust. of Campanularian. [ 1913 Webster ]
n. [ Spiral + zooid. So called because they often have a spiral form when contracted. ] (Zool.) One of the special defensive zooids of certain hydroids. They have the form of long, slender tentacles, and bear lasso cells. [ 1913 Webster ]
n. 1. (Biol.) An organic body or cell having locomotion, as a spermatic cell or spermatozooid. [ 1913 Webster ]
2. (Zool.) (a) An animal in one of its inferior stages of development, as one of the intermediate forms in alternate generation. (b) One of the individual animals in a composite group, as of Anthozoa, Hydroidea, and Bryozoa; -- sometimes restricted to those individuals in which the mouth and digestive organs are not developed. [ 1913 Webster ]
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