emitter

[ ih-mit-er ]

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.

emitter

/ 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

Word History and Origins

Origin of emitter¹

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

Example Sentences

Mega-dairies are among the largest ammonia emitters, contributing to fine particulate matter pollution that causes respiratory illnesses and premature death.

From Los Angeles Times

"They are the largest emitters, with the greatest capacities and responsibilities," he said.

From BBC

But this year the leaders of some of the biggest economies and biggest carbon emitters are notably absent.

From BBC

Independent think tank Carbon Tracker says Aramco is "the world's largest corporate greenhouse gas emitter".

From BBC

But agriculture and waste — which in some way, represent the beginning and end of our food systems — are still major emitters of methane in the Global South, according to the methane budget report.

From Salon