greenhouse gas
noun
- gas in an atmosphere of a planet (usually Earth) that absorbs and emits radiation within the thermal infrared range and causes the greenhouse effect
Wiktionary
Pronunciation: /ˌɡɹiːn.haʊs ˈɡæs/ / /ˌɡɹinˌ(h)aʊs ˈɡæs/
noun
- Any gas (such as carbon dioxide, a chlorofluorocarbon (CFC), or methane) that contributes to the greenhouse effect when released into the atmosphere by absorbing infrared radiation emitted by a planet's surface, thus increasing the surface temperature.
“Termites and cows account for much greenhouse gas.”
“Only two greenhouse gases get much attention.”