• A Git repository within another parent repository. Use cases for submodules include breaking codebases up into several repositories, and reusing submodules in multiple repositories. Using a submodule works by adding information about the respective source repository, i.e., it does not require to duplicate code.

1. Related terms: Repository, Git, Upstream, Commit
2. Previous term: Git flow
3. Next term: GitFlow
4. Random term: Compared to what? (webglossary.info/random 🎲)