marsh gas
noun
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. 2019
Related Words for marsh gas
methaneExamples from the Web for marsh gas
Historical Examples of marsh gas
Many varieties of coal give off a gas known as marsh-gas or fire-damp.
The Wonder Book of KnowledgeVarious
marsh gas
noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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marsh gas
n.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.