# docker

/ˈdɑkɝ/ (US) · /dˈɒkɐ/ (UK) · CEFR C1 · Noun

Source: https://englishreference.com/word/docker
Updated: 2026-05-18

## Definition

a tool that helps you package and run software in a way that works the same on any computer. It creates a container for your program so it doesn't depend on the specific settings of the machine it is on.

For teachers: a platform for developing, shipping, and running applications inside containers. It provides a consistent environment for software to run regardless of the underlying infrastructure.

## Examples

- The developer uses Docker to ensure the app runs the same on every server.
- By using Docker, the team simplified the deployment process so that the application no longer required specific server configurations.
- The adoption of Docker has revolutionized modern software development by enabling developers to encapsulate their applications and dependencies into portable, self-sufficient containers that execute consistently across different environments.

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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.