marsh gas

See synonyms for marsh gas on Thesaurus.com
noun
  1. a gaseous decomposition product of organic matter, consisting primarily of methane.

Origin of marsh gas

1
An Americanism dating back to 1775–85
  • Also called swamp gas.

Words Nearby marsh gas

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024

How to use marsh gas in a sentence

British Dictionary definitions for marsh gas

marsh gas

noun
  1. a hydrocarbon gas largely composed of methane formed when organic material decays in the absence of air

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