Meaning of split screen

split' screen'

Pronunciation: [key]
  1. Also calleda type of process photography in which two or more shots are juxtaposed and projected simultaneously on the screen.
  2. a mode of operation that uses windows to enable simultaneous viewing of two or more displays on the same screen.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.