Also found in: Dictionary, Acronyms, Wikipedia.
head-up display[′hed ‚əp di′splā]
A device that enables an aircraft pilot to view the instrument panel while looking out the cockpit window, by projecting an image of the panel in the direction of the window and forming the image at infinity.
head-up display (HUD)
the pilot for takeoff will be displayed; the information displayed during navigation, attack, and landing will be different.