Simple Definition of LED

from our Learner's Dictionary

LED

noun

plural LEDs
technical : a device that lights up and displays information when electricity passes through it

Note: LEDs are often used to show numbers and words on electronic devices such as digital clocks. LED is an abbreviation of "light-emitting diode."

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“LED.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/LED. Accessed 17 Apr. 2026.

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