Univalve

3 definitions found

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

  Univalve \U"ni*valve\, n. [Uni- + valve: cf. F. univalve.]
     (Zool.)
     A shell consisting of one valve only; a mollusk whose shell
     is composed of a single piece, as the snails and conchs.
     [1913 Webster]
  


     Note: Most univalves are spiral and are the shells of
           gastropods, but many belong to cephalopods and
           pteropods. A large number of univalves belonging to the
           gastropods are conical, cup-shaped, or shieldlike, as
           the limpets.
           [1913 Webster] Univalve

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

  Univalve \U"ni*valve\, Univalved \U"ni*valved\, a. [Cf. F.
     univalve.] (Bot. & Zool.)
     Having one valve; as, a univalve shell or pericarp.
     [1913 Webster]

From WordNet (r) 2.0 [wn]:

  univalve
       adj : used of mollusks, especially gastropods, as snails etc.
             [ant: {bivalve}]
       n : a class of mollusks typically having a one-piece coiled
           shell and flattened muscular foot with a head bearing
           stalked eyes [syn: {gastropod}]