siphon

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si·phon / ˈsīfən/ (also sy·phon) • n. a pipe or tube used to convey liquid upward from a container and then down to a lower level by gravity, the liquid being made to enter the pipe by atmospheric pressure. ∎  Zool. a tubular organ in an aquatic animal, esp. a mollusk, through which water is drawn in or expelled. • v. [tr.] draw off or convey (liquid) by means of a siphon. ∎ fig. draw off or transfer over a period of time, esp. illegally or unfairly: he's been siphoning money off the firm. DERIVATIVES: si·phon·age / -nij/ n. si·phon·al / -nəl/ adj. ( Zool. ) si·phon·ic / sīˈfänik/ adj. ORIGIN: late Middle English: from French, or via Latin from Greek siphōn ‘pipe.’ The verb dates from the mid 19th cent.

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siphon (sī´fən, –fŏn), tube or other enclosed conduit through which a liquid is lifted over an elevation and then emptied at a lower level. The movement of the liquid is driven primarily by the force of gravity. A siphon is typically shaped like an inverted J or U; to operate, it must discharge at a level lower than that of the liquid's surface on the intake side. The siphon must be filled before it will operate; suction is sometimes used initially to draw a liquid into a empty siphon.

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siphon In bivalve molluscs (Bivalvia) and gastropods (Gastropoda), a tube that connects the mollusc to the world outside, funnelling water towards and away from the gills. In bivalves siphons may occur in pairs.

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siphon In Bivalvia and Gastropoda, a tube that funnels water towards and away from the gills. In bivalves siphons often occur in pairs.

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siphon, syphon bent tube for drawing off liquid by atmospheric pressure. XVII. — F. siphon or L. sīphō, -ōn- — Gr. sī́phōn pipe, tube.