emission

B2 Topic:Environment & Ecology

US /ˈɛmɪʃən/ UK /ɪˈmɪʃən/ See IPA manual

Freq #30602

Meanings

1

noun
A gas or substance released into the air, especially a polluting one.

The new law aims to cut carbon emissions from factories.
2

noun
The act of sending out light, heat, gas, or similar.

Scientists measured the emission of light from the distant star.

Thesaurus

Synonyms

1 noun · a gas or substance released... discharge

2 noun · the act of sending out... emanation issuance

Word family

Forms emissions

Derived forms emissionlessemissionsgateemitlow-emissionnonemissionphotoemissionreemissionsuperemissionzero-emission

Appears in

Phrases (1)

See all

nocturnal emission
ejaculation that occurs during sleep

Adjective + noun

Simplified etymology

Emission entered English in late Middle English from Latin emittere, “to send out,” and literally denotes something sent out. Emit and emissary derive from the same Latin verb.

Etymology

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

émission Middle French ēmissiō Latin

View etymology graph ->

Topics

Environment & Ecology

External links

# emission

**Type:** Word
**Level:** B2
**Part of speech:** noun
**IPA (US):** /ˈɛmɪʃən/
**IPA (UK):** /ɪˈmɪʃən/
**Frequency rank:** 30602

## Meanings
1. A gas or substance released into the air, especially a polluting one.
2. The act of sending out light, heat, gas, or similar.

## Examples
- The new law aims to cut carbon emissions from factories.
- Scientists measured the emission of light from the distant star.

## Derived Forms
- emissionless
- emissionsgate
- emit
- low-emission
- nonemission
- photoemission
- reemission
- superemission
- zero-emission

## Roots and Affixes
- Root: émission
- Root: ēmissiō

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

## AI Etymology
Emission is first attested in 1607. From Middle French émission, from Latin ēmissiō (“sending forth”), from ēmittō (“send out”), from ex (“from, out of”) + mittō (“send”). The historical chain includes émission (Middle French) and ēmissiō (Latin). The surrounding word family includes derived forms such as emissionless, emissionsgate, emit, and low-emission. In present use it covers a gas or substance released into the air, especially a polluting one and the act of sending out light, heat, gas, or similar.

## Topics
- Environment & Ecology

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