screenextension
nounUK /ˈskriːn ɪkˌstɛnʃən/
US /ˈskriːn ɪkˌstɛnʃən/
A screen extension is a screen you add to make your computer screen bigger.
She plugged in a screen extension so she could see two windows at once.
RELATED WORDS
OTHER MEANINGS
2. A software add-on that adds new features to a screen-sharing or screen-recording program.
The app's screen extension lets you draw on top of shared slides.
3. An extra part added to a movie screen or stage screen to make it wider.
The theater added a screen extension for the widescreen film.
4. A stretch of time added to a screening, such as a longer showing of a film.
The festival announced a screen extension for the popular documentary.