noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   A hydrocarbon, a particular isomer of C₄H₁₀ found in natural gas. countable, uncountable

Synonyms

All synonyms

2 methylpropane2-methylpropanemethylpropanemethylpropanetrimethylmethanetrimethylmethane

Etymology

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

Related phrases

n butanenatural gas

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.