# closed-source

> English word · Adjective

## Definitions
1. Whose constituent makeup, or source code, is not made publicly available.

## Etymology
From closed + source, in reference to source code.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/closed-source