Source : Webster's Revised Unabridged Dictionary (1913)

Hydranth \Hy"dranth\, n. [Hydra + Gr. ? a flower.] (Zo["o]l.)
   One of the nutritive zooids of a hydroid colony. Also applied
   to the proboscis or manubrium of a hydroid medusa. See
   Illust. of {Hydroidea}.