What difference is there between:

  • Full-screen
  • Full screen
  • Fullscreen

Which of these terms means "click to switch to full-screen mode"?

I was guessing that full-screen is an adjective, and fullscreen is a misprint for full screen, but I'm not sure about it.

  • 1
    "Press.to enter full-screen mode"--shouldn't it be "click to switch to full-screen mode"? – Victor B. Feb 28 '18 at 10:13

Correct would be


since it is a compound adjective in

full-screen mode


full screen

would still be understood, especially given how words are concatenated these days under the influence of programming with snake_case and CamelCase

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  • full-screen is only an adjective, right? Whereas full screen is a noun? – SovereignSun Feb 28 '18 at 17:46

'fullscreen' is now taking a trend and is becoming a new norm due to the popular concatenation of the phrase 'full screen'. I have seen the phrase said as 'fullscreen' in many places, but it is mostly an informal spelling. You may see in formal documents that the phrase 'full screen' is used (but do note that said documents are sometimes quite old, before the phrase's mainstream usage in places such as online media streaming).

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  • The presentation template occupied the full screen. (complete screen is better though)
  • Full screen was wiped down.
  • Full-screen presentation mode.

Usage is still full screen with space across various content. The very recent content in the last 2 decades has started using fullscreen without space. Of course, it means that the word without space is well understood and accepted. It is still used in most written content with a space. A good sample is via Google ngram.

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