Hydroid Hy"droid, a. [Hydra + -oid.] (Zo["o]l.) Related to, or resembling, the hydra; of or pertaining to the Hydroidea. -- n. One of the Hydroideas. [1913 Webster]

The Collaborative International Dictionary of English. 2000.

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  • Hydroid — may refer to:Marine BiologyColonial, plant like animals closely related to jellyfish, with stinging cellsany member of the invertebrate order Hydroida (class Hydrozoa, phylum Cnidaria). Hydroids have three basic life cycle stages: (1) a tiny free …   Wikipedia

  • hydroid — [hī′droid΄] adj. [ HYDR(A) + OID] 1. like a hydra or polyp 2. of or related to an order (Hydroida) of hydrozoans, including the hydras and many colonial marine species n. any hydroid hydrozoan …   English World dictionary

  • hydroid — /huy droyd/, adj. 1. noting or pertaining to that form of hydrozoan that is asexual and grows into branching colonies by budding. n. 2. the phase of a hydrozoan coelenterate that consists of polyp forms usually growing as an attached colony.… …   Universalium

  • hydroid — hy·droid hī .drȯid adj of or relating to a hydrozoan esp resembling a typical hydra hydroid n HYDROZOAN esp a hydrozoan polyp as distinguished from a medusa …   Medical dictionary

  • hydroid — I. adjective Etymology: ultimately from New Latin Hydra Date: circa 1864 of or relating to a hydrozoan; especially resembling a typical hydra II. noun Date: 1865 hydrozoan; especially a hydrozoan polyp as distinguished from a hydrozoan jellyfish …   New Collegiate Dictionary

  • hydroid — n. [Gr. hydor, water; eidos, like] (CNIDARIA) Polyp of coelenterates; any member of the Hydroida …   Dictionary of invertebrate zoology

  • hydroid — 1. noun Any of many colonial coelenterates that exist mainly as a polyp; a hydrozoan 2. adjective Of or pertaining to such creatures …   Wiktionary

  • hydroid — adj. pertaining to or characteristic of an asexual hydrozoan polyp (Zoology) …   English contemporary dictionary

  • hydroid — [ hʌɪdrɔɪd] noun Zoology a coelenterate of an order (Hydroida) which includes the hydras …   English new terms dictionary

  • hydroid — hy·droid …   English syllables

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