Definitions for LCD
Random House Webster's College Dictionary
liquid-crystal display: a display of information, as on digital watches, calculators, and many portable computers, using a liquid-crystal film that changes its optical properties when a voltage is applied.
Origin of LCD:
least common denominator; lowest common denominator.
liquid crystal display, LCD(noun)
a digital display that uses liquid crystal cells that change reflectivity in an applied electric field; used for portable computer displays and watches etc.