extensions

The term **"extensions"** generally refers to additions or expansions that increase or enhance the functionality, scope, or length of something. Depending on context, it can mean:

- **In computing:** Software modules or plug-ins that add new features to an application or browser.
- **In general usage:** The act of extending or prolonging something (e.g., a time extension, a hair extension).
- **In file systems:** The suffix at the end of a filename that indicates the file type or format (e.g., ".txt", ".jpg").