Light-emitting diode



[lahyt-i-mit-ing] /ˈlaɪt ɪˌmɪt ɪŋ/

noun
1.
.
noun
1.
a diode of semiconductor material, such as gallium arsenide, that emits light when a forward bias is applied, the colour depending on the semiconductor material: used as off/on indicators LED
light-emitting diode
See LED.

electronics
(LED) a type of diode that emits light when current passes through it. Depending on the material used the colour can be visible or infrared. LEDs have many uses, visible LEDs are used as indicator lights on all sorts of electronic devices and in moving-message panels, while infrared LEDs are the heart of remote control devices.
See also smoke-emitting diode.
(1996-01-05)

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