a gaseous decomposition product of organic matter, consisting primarily of methane.
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Question 1 of 7
What does “vacillate” mean?
Also called swamp gas.
Origin of marsh gas
An Americanism dating back to 1775–85
Words nearby marsh gas
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020
Example sentences from the Web for marsh gas
Many varieties of coal give off a gas known as marsh-gas or fire-damp.The Wonder Book of Knowledge|Various
British Dictionary definitions for marsh gas
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
Medical definitions for marsh gas
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.