Hydroid

2 definitions found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

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

From WordNet (r) 2.0 [wn]:



  hydroid
       n : colonial coelenterates having the polyp phase dominant [syn:
            {hydrozoan}]