Meaning of “marsh gas” in the English Dictionary

british dictionary

"marsh gas" in British English

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marsh gasnoun [ U ]

uk /ˈmɑːʃ ˌɡæs/ us /ˈmɑːrʃ ˌɡæs/

a gas produced in a marsh (= an area of very wet ground) by decaying plants that are covered by water

(Definition of “marsh gas” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

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