Webster’s Revised Unabridged Dictionary · 1913
Hydrina
Hy·dri′na (hī·drī′nȧ), n. pl. [NL. See Hydra.] (Zoöl.) The group of hydroids to which the fresh-water hydras belong.
Webster’s Revised Unabridged Dictionary · 1913
Hy·dri′na (hī·drī′nȧ), n. pl. [NL. See Hydra.] (Zoöl.) The group of hydroids to which the fresh-water hydras belong.