For Venturi we have terms and definitions in 5 topics. The topics are Automotive, Car Aerodynamics, Physical Geography, Plumbing and Pool and Spa.

Restriction (narrowed area) in air horn.
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A narrow tunnel under the side pod, shaped like an inverted wing. As air enters and is forced through the narrow center,its speed increases, creating a low pressure area between the bottom of the car and the track. This creates a suction effect, which holds the car to the track.
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An increase in the velocity of a fluid or gas due to the constriction of flow.
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A short tube with a tapered constriction in the middle that causes an increase in the velocity of flow of a fluid and a corresponding decrease in fluid pressure and that is used for creating a suction in a vacuum pump
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A means of creating a vacuum line in the return line of a pool or spa, that is used with ozonators, in order to inject ozone into the water stream.
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