Category:Hydrorhiza

Hy`dro*rhi"za, n.; pl. L. Hydrorhizæ, E. Hydrorhizas. Etym: [NL., fr. E. hydra + Gr. (Zoöl.)

Defn: The rootstock or decumbent stem by which a hydroid is attached to other objects. See Illust. under Hydroidea.