Borrowed from French déployer (to unroll, unfold), from Old French desploiier, itself from des- + ploiier, or possibly from Late Latin displicāre (to unfold, display), from Latin dis- (apart) + plicare (to fold). Doublet of display.



deploy (third-person singular simple present deploys, present participle deploying, simple past and past participle deployed)

  1. (transitive, ergative) To prepare and arrange (usually military unit or units) for use.
    "Deploy two units of infantry along the enemy's flank," the general ordered.
    • 2019 October, Tony Miles and Philip Sherratt, “EMR kicks off new era”, in Modern Railways, page 53:
      EMR will deploy 18 of the 21 '360s' in daily service, operating them in 12-car formations at peak times.
  2. (transitive, intransitive) To unfold, open, or otherwise become ready for use.
    He waited tensely for his parachute to deploy.
    • 2012, John Branch, “Snow Fall : The Avalanche at Tunnel Creek”, in New York Time[1]:
      At first she thought she would be embarrassed that she had deployed her air bag, that the other expert skiers she was with, more than a dozen of them, would have a good laugh at her panicked overreaction.
  3. (computing) To install, test and implement a computer system or application.
    The process for the deployment scenario includes: building a master installation of the operating system, creating its image and deploying the image onto a destination computer.

Related termsEdit



deploy (plural deploys)

  1. (military, dated) deployment


Further readingEdit