isobutane

[ ahy-suh-byoo-teyn, -byoo-teyn ]

noun

, Chemistry.

1. a colorless, flammable gas, C 4 H 10 , used as a fuel, as a refrigerant, and in the manufacture of gasoline by alkylation.

Word History and Origins

Origin of isobutane¹

First recorded in 1875–80; iso- + butane