emitter

American  

[ih-mit-er] / ɪˈmɪt ər /

noun

1. a person or thing that emits.

2. Electronics.  an electrode on a transistor from which a flow of electrons or holes enters the region between the electrodes.

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emitter British  

/ ɪˈmɪtə /

noun

1. a person or thing that emits

2. a radioactive substance that emits radiation

   a beta emitter

3. the region in a transistor in which the charge-carrying holes or electrons originate

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Etymology

Origin of emitter

First recorded in 1880–85; emit + -er ¹

Example Sentences

The world's two biggest carbon emitters, China and the US, had similar impacts on this COP but achieved them in different ways.

From BBC

Japan is the world's fifth-largest single-country emitter of carbon dioxide, after China, the United States, India and Russia, and is heavily dependent on imported fossil fuels.

From Barron's

But the world's largest carbon emitter China, usually India's ally at climate negotiations to counter developed countries, has already submitted its updated climate plan.

From BBC

The United States, the world's largest economy and second-biggest emitter of greenhouse gases, is absent for the first time in the history of these meetings.

From Barron's

India is the world's most populous country, the third-biggest emitter of greenhouse gases, and remains deeply dependent on polluting coal to meet soaring energy demand.

From Barron's