vena contracta

[ vee-nuh kuhn-trak-tuh ]
/ ˈvi nə kənˈtræk tə /

noun, plural ve·nae con·trac·tae [vee-nee kuhn-trak-tee]. /ˈvi ni kənˈtræk ti/. Hydraulics.

any of the locations in a jet of fluid emerging from an orifice where the cross section of the jet is at a minimum, especially the location of minimum cross section nearest the orifice.

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Origin of vena contracta

<New Latin: contracted vein
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020