Meaning & use
greenhouse gas
A gas, such as carbon dioxide or methane, that traps heat in Earth's atmosphere and contributes to warming.
See it in a sentence
Burning fossil fuels releases large amounts of greenhouse gas into the atmosphere.
The country pledged to cut its greenhouse gas emissions by half within a decade.
A note on using this word
Carbon dioxide, methane, and water vapor are the most significant naturally occurring greenhouse gases.
Words with a similar meaning
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