Definitions

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. Having simplicity of action; especially acting or exerting force during strokes in one direction only; said of a reciprocating engine, pump, etc.

from the GNU version of the Collaborative International Dictionary of English

  • adj. Having simplicity of action; especially (Mach.), acting or exerting force during strokes in one direction only; -- said of a reciprocating engine, pump, etc.

from The Century Dictionary and Cyclopedia

  • Of any reciprocating machine or implement, acting effectively in only one direction: distinguished from double-acting.

Etymologies

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Examples

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