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isobutane

American

[ahy-suh-byoo-tayn, -byoo-tayn] / ˌaɪ səˈbju teɪn, -bjuˈteɪn /

noun

Chemistry.

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

Etymology

Origin of isobutane

First recorded in 1875–80; iso- + butane

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

isobutane

Chemicals such as isobutane, pentane and ammonia can also be found in commercial-type fridges, Dr Santillo added.

From BBC ● Sep. 19, 2026

Greenpeace advocates in Germany had worked closely with refrigeration engineers to develop what came to be known as Greenfreeze cooling equipment: machines that used hydrocarbons, including isobutane and propane, as refrigerants.

From Salon ● May 23, 2023

One source of unintentional benzene comes from propellants such as isobutane.

From Seattle Times ● Jun. 22, 2022

Butane exists as two isomers, n−butane and isobutane.

From Textbooks ● Feb. 14, 2019

The effects are fueled by MSR IsoPro, a blend of isobutane and propane.

From Washington Post ● Feb. 15, 2018

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Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023