Standard Lemma guide

methane

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

Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.

  • 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

Usage: uncountable

Topics: chemistry, natural-sciences, organic-chemistry, physical-sciences

Examples

  • Cattle emit a large amount of methane.

Meaning relationships

Synonyms: methyl hydride, carbon tetrahydride

Antonyms: none provided

Broader terms: greenhouse gas

2

noun

Meaning 2

Any of very many derivatives of methane.

Definition source: English Wiktionary via Wiktextract

Usage: countable

Topics: chemistry, natural-sciences, organic-chemistry, physical-sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

3

noun

Meaning 3

a colorless odorless gas used as a fuel

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

Broader terms: gas, methane series, alkane series, alkane, paraffin series, paraffin

Narrower terms: marsh gas

History

Etymology

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
  • Chinese Mandarin: 甲烷 (jiǎwán) — the compound CH4
  • Czech: metan — the compound CH4
  • Dutch: methaan — the compound CH4
  • Erzya: ведь тол (veď tol) — the compound CH4
  • Esperanto: metano — the compound CH4
  • Finnish: metaani — the compound CH4
  • French: méthane — the compound CH4
  • German: Methan — the compound CH4
  • Greek: μεθάνιο (methánio) — the compound CH4
  • Hebrew: מתאן (metán) — the compound CH4
  • Hungarian: metán — the compound CH4
  • Icelandic: metan — the compound CH4
  • Indonesian: metana — the compound CH4
  • Irish: meatán — the compound CH4
  • Italian: metano — the compound CH4
  • Japanese: メタン (metan) — the compound CH4
  • Japanese: メタンガス (metan gasu) — the compound CH4
  • Kazakh: метан (metan) — the compound CH4
  • Khmer: មេតាន (meitaan) — the compound CH4
  • Korean: 메탄 (metan) — the compound CH4
  • Korean: 메테인 (metein) — the compound CH4
  • Latin: methanum — the compound CH4
  • Malay: metana — the compound CH4
  • Norwegian Bokmål: metan — the compound CH4
  • Norwegian Nynorsk: metan — the compound CH4
  • Occitan: metan — the compound CH4
  • Persian: متان (metân) — the compound CH4
  • Polish: metan — the compound CH4
  • Portuguese: metano — the compound CH4
  • Punjabi: ਮੀਥੇਨ (mīthen) — the compound CH4
  • Romanian: metan — the compound CH4
  • Russian: мета́н (metán) — the compound CH4
  • Slovene: metan — the compound CH4
  • Spanish: metano — the compound CH4
  • Swedish: metan — the compound CH4
  • Tagalog: istan — the compound CH4
  • Turkish: metan — the compound CH4
  • Turkish: bataklık gazı — the compound CH4
  • Vietnamese: mê-tan — the compound CH4
  • Welsh: methan — the compound CH4
  • Welsh: llosgnwy — the compound CH4