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double-acting

[duhb-uh l-ak-ting] /ˈdʌb əlˈæk tɪŋ/
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.
Origin
1835-1845
1835-45
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for double-acting
  • If power is added to the downward falling hammer, the hammer is referred to as double-acting.
  • Two steam reciprocating, double-acting, duplex pumps handle pumping duties.
British Dictionary definitions for double-acting

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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9
12
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