Standard Lemma guide

isobutane

noun · 1 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.

  • UK: Recorded audio is listed in the source snapshot.

1

noun

Meaning 1

A hydrocarbon, a particular isomer of C4H10 found in natural gas.

Definition source: English Wiktionary via Wiktextract

Usage: countable, uncountable

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

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

History

Etymology

From iso- + butane. From being an isomer of butane, different from n-butane (“'normal' butane”).

Across languages

Translations

15 source translations are retained for this English entry.

  • Catalan: isobutà — a hydrocarbon: C4H10
  • Chinese Mandarin: 異丁烷 /异丁烷 (yì dīngwán) — a hydrocarbon: C4H10
  • Finnish: isobutaani — a hydrocarbon: C4H10
  • French: isobutane — a hydrocarbon: C4H10
  • French: 2-méthylpropane — a hydrocarbon: C4H10
  • French: méthylpropane — a hydrocarbon: C4H10
  • German: Isobutan — a hydrocarbon: C4H10
  • Greek: ισοβουτάνιο (isovoutánio) — a hydrocarbon: C4H10
  • Hungarian: izobután — a hydrocarbon: C4H10
  • Malay: isobutana — a hydrocarbon: C4H10
  • Portuguese: isobutano — a hydrocarbon: C4H10
  • Russian: изобута́н (izobután) — a hydrocarbon: C4H10
  • Spanish: metilpropano — a hydrocarbon: C4H10
  • Spanish: isobutano — a hydrocarbon: C4H10
  • Turkish: izobütan — a hydrocarbon: C4H10