Real Dictionary

venturi (tube) in American English
a short tube with a constricted, throatlike passage that increases the velocity and lowers the pressure of a fluid conveyed through it: used to measure the flow of a fluid, to operate instruments, as in aircraft, to regulate the mixture in a carburetor, e

venturi tube in American English
noun: 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 differen

Venturi tube in British English
noun: 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