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Added 9 October 2026

emission

/ɪˈmɪʃ.ən/ noun

In Latin: ēmissiō First recorded: 1607 Wiktionary

noun Definition from WordNet 3.1, Princeton University. Pronunciation from Wiktionary, via Kaikki.org. More about emission at Wordnik → Where our words come from →

The act of emitting; causing to flow forth.
A substance that is emitted or released.
The release of electrons from parent atoms.

Origin

First attested in 1607. From Middle French émission, from Latin ēmissiō (“sending forth”), from ēmittō (“send out”), from ex (“from, out of”) + mittō (“send”).

From Wiktionary, via Kaikki.org (CC BY-SA)

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