led

¹ American  

[led] / lɛd /

verb

1. simple past tense and past participle of lead.

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LED ² American  

[el-ee-dee, led] / ˈɛlˌiˈdi, lɛd /

noun

1. light-emitting diode: a semiconductor diode that emits light when conducting current and is used in electronic displays, indoor and outdoor lighting, etc.

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LED ¹ British  

abbreviation

1. light-emitting diode

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led ² British  

/ lɛd /

verb

1. the past tense and past participle of lead 1

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LED Scientific  

/ ĕl′ē-dē′,lĕd /

1. Short for light-emitting diode. An electronic semiconductor device that emits light when an electric current passes through it. They are considerably more efficient than incandescent bulbs, and rarely burn out. LEDs are used in many applications such as flat-screen video displays, and increasingly as general sources of light.

2. See also semiconductor laser

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Other Word Forms

• unled adjective
• well-led adjective

Example Sentences

Conservation charity Froglife led research last year which found common toad populations in the UK had declined by 41% in the last 40 years.

From BBC • Apr. 19, 2026

The soaring oil price as first Iran and then the U.S. prevented oil exports from the Persian Gulf naturally led to higher earnings forecasts for big oil companies.

From The Wall Street Journal • Apr. 19, 2026

He pointed out that the rally in March 2000 was also led by just a few stocks.

From MarketWatch • Apr. 19, 2026

Researchers led by Northwestern University have developed a fuel cell that generates electricity using microbes naturally found in soil.

From Science Daily • Apr. 19, 2026

Whether it was her inexperience that caused her discomfort or her discomfort that led to her inexperience remained to be proven.

From "The Very, Very Far North" by Dan Bar-el