gas emissions
nounUK /ɡæs ɪˈmɪʃənz/
US /ɡæs ɪˈmɪʃənz/
Gases that go out into the air, often from cars or factories.
Cars and factories make gas emissions that can harm the air.
OTHER MEANINGS
2. Waste gases released from an engine or machine.
The truck's gas emissions were tested for safety.
3. Gases given off by animals, such as from digestion.
Cows produce gas emissions that add to the greenhouse effect.
4. Gases released naturally by the earth, like from volcanoes.
Volcanic gas emissions can spread far across the sky.