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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.


Read Also:

  • Back projection

    background projection. the projection from the rear of previously photographed material on a translucent screen, used as background for a television or motion-picture shot. the projection of filmed action or stills on a translucent screen in front of which actors are lit and filmed: used to simulate an outdoor or location background in the studio. […]

  • Back quote

    back quote character “`” ASCII code 96. Common names: left quote; left single quote; open quote; ITU-T: grave accent; grave. Rare: backprime; INTERCAL: backspark; unapostrophe; birk; blugle; back tick; back glitch; push; ITU-T: opening single quotation mark; quasiquote. Back quote is used in Unix shells to invoke command substitution. (1996-11-26)

  • Back rest

    a support used to rest one’s back. Historical Examples Next I filled one of the rawhide panniers with brush, and lashed it across Jones’ neck for a back rest. A Man in the Open Roger Pocock For a moment or two the girl sat with her head against the back rest of the sofa, completely […]

  • Backrest

    a support used to rest one’s back. Historical Examples An adjustable centre seat with backrest could be used so as to provide accommodation for six passengers. Carriages & Coaches Ralph Straus

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