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 calledventuri 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.

From Project Gutenberg

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

From Project Gutenberg

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.

From Time Magazine Archive

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

From Project Gutenberg

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.

From Project Gutenberg