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From Longman Dictionary of Contemporary English
Related topics: Gas, coal, oil, Chemistry
methaneme‧thane /ˈmiːθeɪn $ ˈme-/ noun [uncountable]  TPGHCa gas that you cannot see or smell, which can be burned to give heat Methane is one of the principal gases contributing to the greenhouse effect.
Examples from the Corpus
methaneBut it might contribute to global warming because methane is a powerful greenhouse gas.Life generates methane, ammonia, oxygen, hydrogen, carbon dioxide, and many other gases.To make methane, burn one weight of hydrogen with three of carbon.He determined that the most explosive mixture of the purified methane and air was in the ratio of 1:8.Titan is unique in having a thick atmosphere made mostly of nitrogen, with some methane and possibly argon.But the scientists were encouraged that stinky methane stabilized after 12 days.In recent studies, however, we have shown that methane production is more important than previously believed.
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