Definition of "deploy"

deploy

/dɪˈplɔɪ/

verb
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.
  Quotations
  The carriage, which was at full gallop, stopped suddenly; the guards deployed round, and Mademoiselle alighted. She advanced with the step of an empress, till she came beside the Queen, when, dropping on her knee, she kissed the hem of her robe, and then the royal hand.
  1834, L[etitia] E[lizabeth] L[andon], chapter XXV, in Francesca Carrara. […], volume I, London: Richard Bentley, […], (successor to Henry Colburn), page 293
  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.
  Quotations
  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.
noun
plural deploys
1. (military, dated) Deployment.