closed source

noun

Software whose source code is not made publicly available.

Ask AI about this wordChatGPTClaudePerplexityGoogle AIGrok

Meanings

adjectiveclosed source (not comparable)
  1. alternativenot comparableAlternative spelling of closed-source.
nounclosed source (uncountable)
  1. uncountableSoftware whose source code is not made publicly available.
Cite this entry
APA

closed source. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/closed%20source

MLA

“closed source.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/closed%20source. Accessed November 2, 2026.

Chicago

WatkinsX Dictionary, s.v. “closed source,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/closed%20source.

Source: closed source on Wiktionary, CC BY-SA 4.0.