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4 definitions found

From: DICT.TW English-Chinese Dictionary 英漢字典

 uni·valve /ˈjunɪˌvælv/

From: Webster's Revised Unabridged Dictionary (1913)

 U·ni·valve n.  Zool. A shell consisting of one valve only; a mollusk whose shell is composed of a single piece, as the snails and conchs.
 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.

From: Webster's Revised Unabridged Dictionary (1913)

 U·ni·valve U·ni·valved a.  Bot. & Zool. Having one valve; as, a univalve shell or pericarp.

From: WordNet (r) 2.0

      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]