deploy

UK: /dɪˈplɔɪ/ US: /dɪˈplɔɪ/ ,(di ploi′)

WordReference Random House Learner's Dictionary of American English © 2025

de•ploy /dɪˈplɔɪ/   v. [ ~ + obj]

1. Military to arrange or move into position esp. for battle:
   to deploy missiles.

de•ploy•ment, n. 

[uncountable] Troop deployment was efficiently accomplished.

[countable] a deployment that exposes his right flank.

See -ploy-.

WordReference Random House Unabridged Dictionary of American English © 2025

de•ploy  (di ploi′), v.t. 

1. Military to spread out (troops) so as to form an extended front or line.
2. Military to arrange in a position of readiness, or to move strategically or appropriately:
   to deploy a battery of new missiles.

v.i. 

3. Military to spread out strategically or in an extended front or line.
4. to come into a position ready for use:
   the plane can't land unless the landing gear deploys.

• French déployer, equivalent. to dé- dis-¹ + ployer to fold; see ploy
• 1470–80

de•ploy′a•ble, adj. 
de•ploy′a•bil′i•ty, n. 
de•ploy′ment, n. 

Collins Concise English Dictionary © HarperCollins Publishers::

deploy / dɪˈplɔɪ/ verb

1. to adopt or cause to adopt a battle formation, esp from a narrow front formation
2. (transitive) to redistribute (forces) to or within a given area

Etymology: 18th Century: from French déployer, from Latin displicāre to unfold; see display

deˈployment noun