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2017 Word of the Year

backpressure

or back pressure

[bak-presh-er] /ˈbækˌprɛʃ ər/
noun
1.
a resistant pressure exerted by liquid or gas against the forward motion or flow of an exhaust or pipe system:
Careful control of backpressure ensures an even supply of oil from the well.
Origin of backpressure
1860-1865
First recorded in 1860-65; back1 + pressure
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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