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Entry 1 sense Webster, 1913

Siphonata

· Si·pho·na·ta · IPA
01 n. pl. A tribe of bivalve mollusks in which the posterior mantle border is prolonged into two tubes or siphons. Called also Siphoniata. See Siphon…
  1. 1.
    A tribe of bivalve mollusks in which the posterior mantle border is prolonged into two tubes or siphons. Called also Siphoniata. See Siphon, 2 (a), and Quahaug.(Zool.) Also: Siphoniata See: Siphon, Quahaug