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The Collaborative International Dictionary
Siphonata

Siphonata \Si`pho*na"ta\, n. pl. [NL.] (Zo["o]l.) 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.