deploy

Etymology

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.

verb

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.
   deploy some lifeguards on the beach
   Teachers can deploy a wide range of resources in their classrooms.
   EMR will deploy 18 of the 21 '360s' in daily service, operating them in 12-car formations at peak times. 2019 October, Tony Miles, Philip Sherratt, “EMR kicks off new era”, in Modern Railways, page 53
2. (transitive, intransitive) To unfold, open, or otherwise become ready for use.
   He waited tensely for his parachute to deploy.
   deploy the airbag
   the airbag will deploy on collision
   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. 2012, John Branch, “Snow Fall : The Avalanche at Tunnel Creek”, in New York Time
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.

noun

1. (military, dated) Deployment.