# deploy

/dɪˈpɫɔɪ/ (US) · /dɪplˈɔɪ/ (UK)

Source: https://englishreference.com/word/deploy
Updated: 2026-06-20

## Senses

### 1. military/resources

verb · CEFR B2

to move soldiers or equipment into a position where they are ready for action.

For teachers: to position military forces or resources strategically for a specific mission or operation.

- The government decided to deploy more police officers to the city centre during the festival.
- The peacekeeping force was deployed to the border region to monitor the ceasefire and prevent further escalations of violence.

Usage: Often used in the passive voice when referring to troops.

### 2. computing

verb · CEFR C1 · Technical

to make a computer program or system ready for people to use.

For teachers: to move a software application or update from a development environment to a live production environment.

- The team will deploy the new version of the app tonight while most users are asleep.
- After rigorous beta testing, the engineers finally deployed the security patch across the entire corporate network to mitigate the vulnerability.

Usage: Commonly used as a transitive verb with software or systems as the object.

### 3. to open or unfold

verb · CEFR B2

to open up or unfold so that something can work.

For teachers: to move from a stowed or folded position into a functional, open state.

- The car's airbags are designed to deploy instantly if there is a crash.
- The satellite's solar panels failed to deploy correctly, leaving the craft with a critically low power supply shortly after it reached orbit.

### 4. deployment

noun · CEFR C2 · Archaic

the act of moving things or people into position.

For teachers: the action of bringing resources into effective action; a synonym for deployment.

- The general ordered a rapid deploy of the reserve units.
- In historical military texts, one might find 'deploy' used as a noun to describe the tactical arrangement of a battalion.

Teaching tip: This noun form is very rare in modern English; speakers almost always use 'deployment' instead.

## Examples

- The company plans to deploy the new software update tonight.
- The government decided to deploy additional police officers to manage the large crowds during the festival.
- While the military was prepared to deploy troops to the border, diplomatic efforts continued in hopes of reaching a peaceful resolution before any movement occurred.

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.