Main definitions of led in US English:

: led1LED2

led1

  • past and past participle of lead

Pronunciation

led

/led//lɛd/

Main definitions of led in US English:

: led1LED2

LED2

noun

  • A light-emitting diode (a semiconductor diode which glows when a voltage is applied).

    • ‘Companies are developing ways to use organic light-emitting diodes as a source for lighting up rooms.’
    • ‘Powerful light-emitting diodes have been shown to help heal wounds in laboratory animals and are now being tested on humans at the Medical College of Wisconsin.’
    • ‘Japanese scientists have proposed a solution to the puzzle of why blue light-emitting diodes are so bright.’

Origin

1960s: abbreviation.

Pronunciation

LED

/ˌel ˌē ˈdē//ˌɛl ˌi ˈdi/