venturi tube

or Ven·tu·ri tube

[ven-too r-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.

Origin of venturi tube

named after G. B. Venturi (1746–1822), Italian physicist whose work led to its invention
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for venturi tube

Venturi tube

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 Origin for Venturi tube

C19: named after G. B. Venturi (1746–1822), Italian physicist
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012