venturi tube

Or Ven·tu·ri tube

[ven-toor-ee]

noun

1. a device for measuring the flow of a fluid, consisting of a tube with a short, narrow center section and widened, tapered ends, so that a fluid flowing through the center section at a higher velocity than through an end section creates a pressure differential that is a measure of the flow of the fluid.

Venturi tube

/ vɛnˈtʃuːrI /

noun

1. physics a device for measuring fluid flow, consisting of a tube so constricted that the pressure differential produced by fluid flowing through the constriction gives a measure of the rate of flow

2. Also called: venturi. a tube with a constriction used to reduce or control fluid flow, as one in the air inlet of a carburettor

Word History and Origins

Origin of Venturi tube¹

Named after G. B. Venturi (1746–1822), Italian physicist whose work led to its invention

Word History and Origins

Origin of Venturi tube¹

C19: named after G. B. Venturi (1746–1822), Italian physicist

Example Sentences

A long extension is given to the venturi tube which is very narrow around the jet orifices, which are horizontal and shown at A in the drawing.

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The Kern burner, for example, employs the principle of the Venturi tube.

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Once he had learned that air, moving over a still airfoil, also generates lift, Custer went on to investigate the principle of the Venturi tube.

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At the end of each tube there is what we call a 'venturi tube.'

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The wind which blows through the left venturi tube sucks the air out of the right-hand side of the mercury tube, and the right venturi tube sucks the air out of the left-hand side of the mercury tube.

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