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Definition of emitter

emitter

/ɪˈmɪt.ɚ/
e · mit · ter
Plural:emitters
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emitter Lexical Profile

emitter Game Scores & Validity

• noun

1

A device, substance, entity, or organism that discharges, radiates, or sends out light, heat, sound, gas, or particles.

Example

"Coal-fired power plants remain a major emitter of greenhouse gases around the world."

2

The region or terminal in a bipolar junction transistor that injects charge carriers into the base region.

Example

"The engineer connected the emitter of the transistor directly to the ground rail of the circuit."

3

A small nozzle or fitting attached to a drip irrigation line that regulates and delivers water slowly to the roots of a plant.

Example

"She installed a two-gallon-per-hour emitter at the base of each tomato plant in the garden."

Synonyms
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Antonyms
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• Rhymes for emitter

• Nearby Words

emissary
emission
emit
emitter
emma
emmanuel
emmental

Word Origin & Etymology

Formed in English from the verb 'emit' plus the agentive suffix '-er', ultimately tracing back to Latin 'emittere' ('to send forth'), from 'ex-' ('out') and 'mittere' ('to send').

Cite this Entry

Wordmom. (2026). Definition of Emitter. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/emitter
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