: a colorless odorless flammable gaseous hydrocarbon CH4 that is a product of biological decomposition of organic matter and of the carbonization of coal, is used as a fuel and as a starting material in chemical synthesis, and is the simplest of the alkanes
Examples of methane in a Sentence
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Chef Yusuke Nomura crafts plant-forward kaiseki menus using local ingredients, thereby reducing methane emissions.
—
Christopher Elliott, Forbes.com, 27 July 2025
These lakes and Titan's seas are filled with liquid hydrocarbons like ethane and methane rather than water.
—Robert Lea, Space.com, 15 July 2025
What’s more, converting to biodegradable plastics entirely could result in an increase in biodegradable waste in landfills — and with it emissions of methane, a powerful greenhouse gas, the authors wrote.
—Los Angeles Times, 4 July 2025
When Bruegel babbled on anew about the methane, Negan filled him with the much-ballyhooed gas, then lit him on fire from the inside out.
—Charlie Mason, TVLine, 22 June 2025
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Christopher Elliott, Forbes.com, 27 July 2025
These lakes and Titan's seas are filled with liquid hydrocarbons like ethane and methane rather than water.
—Robert Lea, Space.com, 15 July 2025
What’s more, converting to biodegradable plastics entirely could result in an increase in biodegradable waste in landfills — and with it emissions of methane, a powerful greenhouse gas, the authors wrote.
—Los Angeles Times, 4 July 2025
When Bruegel babbled on anew about the methane, Negan filled him with the much-ballyhooed gas, then lit him on fire from the inside out.
—Charlie Mason, TVLine, 22 June 2025
See All Example Sentences for methane
Cite this Entry
“Methane.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/methane. Accessed 5 Aug. 2025.
Copy CitationKids Definition
methane
noun
meth·ane
ˈmeth-ˌān 
: a colorless odorless flammable gas that consists of carbon and hydrogen and is produced by decay of organic matter
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