emission
- 01 B2 Upper Intermediate
a substance, such as a gas, that is sent out into the air.
a substance, typically a pollutant or greenhouse gas, discharged into the atmosphere.
Simple“The government is trying to reduce carbon emissions from cars and factories.”
In context“The new environmental regulations mandate a significant reduction in methane emissions from industrial agricultural facilities by the end of the decade.”
Antonyms - 02 C1 Advanced
the process of sending out light, heat, or sound.
the physical process of discharging or radiating energy or matter from a source.
Simple“The emission of light from the screen can make it hard to sleep.”
In context“The precise measurement of thermal emission allows scientists to determine the surface temperature of distant planets without direct contact.”
Synonyms - 03 C2 Proficiency
a radio or television programme.
a broadcast or transmission of a programme, often used in the context of international media.
Simple“The station began its nightly emission of news at seven o'clock.”
In context“The shortwave emission was intended for audiences across the border, providing an alternative perspective on the unfolding political crisis.”
UsageThis sense is more common in European English contexts influenced by French 'émission' or in formal media studies.
Synonyms
Usage emission zone · emissions scenario
“Reducing emissions was seen as morally right because richer nations produced most of the gases that have warmed the planet.”
“In their view, the government is obsessed with cleaning up electricity generation, even though it accounts for a far smaller total of our emissions - around 10%.”
First attested in 1607. From Middle French émission, from Latin ēmissiō (“sending forth”), from ēmittō (“send out”), from ex (“from, out of”) + mittō (“send”).
Borrowed from French émission.
Etymology adapted from Wiktionary, available under CC BY-SA 4.0.