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marsh gas

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

Origin of marsh gas

An Americanism dating back to 1775–85
Also called swamp gas.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Related Words for marsh gas

methane

Examples from the Web for marsh gas

Historical Examples of marsh gas

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
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
marsh gas in Medicine

marsh gas

n.
  1. methane
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.