Click on a letter or number to jump to listings of terms that correspond. [ 5 | A | B | C | D | E | F | G | H | I | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y ] Term Definition Demo Widescreen A video display that is wider than the standard 4:3 aspect ratio although, in the context of DVD and HDTV, widescreen refers specifically to a 16:9 aspect ratio. See: Aspect Ratio.