noun · 3 senses · updated from the 2026-07-25 local source snapshot
Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.
Sound
Pronunciation
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Received-Pronunciation:mēth'ān
Received-Pronunciation:/ˈmiːθeɪn/
Canada, US:mĕth'ān
Canada, US:/ˈmɛθeɪn/
UK:Recorded audio is listed in the source snapshot.
US:Recorded audio is listed in the source snapshot.
rhymes with -ɛθeɪn
CMU ARPABET:M EH1 TH EY2 N
Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.
1
noun
Meaning 1
The simplest aliphatic hydrocarbon, CH4, being a constituent of natural gas, and one of the most abundant greenhouse gases.
Definition source: English Wiktionary via Wiktextract
Etymology tree Proto-Indo-European *médhu Proto-Hellenic *méthu Ancient Greek μέθυ (méthu) Proto-Indo-European *swel-der.? Ancient Greek ῡ̔́λη (hū́lē)der. German -yl German Methylbor. English methyl Proto-Indo-European *-nós Proto-Italic *-nos Latin -nus Latin -ānusder. English -ane English methane From methyl + -ane.
Across languages
Translations
48 source translations are retained for this English entry.
Abkhaz:
амета́н
(ametʼán)
— the compound CH4
Azerbaijani:
metan
— the compound CH4
Bengali:
মিথেন
(mithen)
— the compound CH4
Breton:
metan
— the compound CH4
Bulgarian:
метан
(metan)
— the compound CH4
Catalan:
metà
— the compound CH4
Chinese Cantonese:
甲烷
(gaap3 jyun4)
— the compound CH4