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double-acting

[ duhb-uhl-ak-ting ]

adjective

  1. (of a reciprocating engine, pump, etc.) having pistons accomplishing work in both directions, fluid being admitted alternately to opposite ends of the cylinders. Compare single-acting.
  2. (of a hinge of a door or the like) permitting movement in either direction from the normal, or closed, position.
  3. having twice the usual effectiveness, strength, use, etc.


double-acting

adjective

  1. (of a reciprocating engine or pump) having a piston or pistons that are pressurized alternately on opposite sides Compare single-acting
  2. (of a hinge, door, etc) having complementary actions in opposed directions
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012


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Word History and Origins

Origin of double-acting1

First recorded in 1835–45
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Example Sentences

He worked at Dolcoath the 63-inch cylinder double-acting engine, upon Boulton and Watt's plan.

A table mounted with one blow-pipe made on this plan, and worked by a double-acting bellows, is recommended for students' use.

Some double-acting cylinders have a piston rod half the area of the piston.

The Double-acting Force Pump is in principle a double plunger pump.

This company substituted a double-acting pump early in 1910.

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double achievementdouble-action