Webster’s Revised Unabridged Dictionary · 1913
Valvata
Val·va′ta (văl·vā′tȧ), n. [NL.; cf. L. valvatus having folding doors. See Valve.] (Zoöl.) A genus of small spiral fresh-water gastropods having an operculum.
Webster’s Revised Unabridged Dictionary · 1913
Val·va′ta (văl·vā′tȧ), n. [NL.; cf. L. valvatus having folding doors. See Valve.] (Zoöl.) A genus of small spiral fresh-water gastropods having an operculum.