An octane rating, or octane number, is a standard measure of a fuel 's ability to withstand compression in an internal combustion engine without causing engine knocking. The higher …

/ ˈɑk·teɪn / Add to word list a chemical substance in gasoline (= liquid fuel) which is used as a measure of its quality (Definition of octane from the Cambridge Academic Content Dictionary …

Feb 21, 2024 · The octane rating of gasoline tells you how much the fuel can be compressed before it spontaneously ignites. When gas ignites by compression rather than because of the …

Nov 17, 2022 · Octane ratings are measures of fuel stability. These ratings are based on the pressure at which a fuel will spontaneously combust (auto-ignite) in a testing engine.

The meaning of OCTANE is any of several isomeric liquid alkanes C8H18. How to use octane in a sentence.

Dec 12, 2025 · Octane number, measure of the ability of a fuel to resist knocking when ignited in a mixture with air in the cylinder of an internal-combustion engine. The octane number is …

a liquid alkane hydrocarbon found in petroleum and existing in 18 isomeric forms, esp the isomer n -octane. Formula: C 8 H 18

OCTANE definition: any of 18 isomeric saturated hydrocarbons having the formula C 8 H 1 8 , some of which are obtained in the distillation and cracking of petroleum. See examples of …

Octane is a component of gasoline and petroleum. Under standard temperature and pressure, octane is an odorless, colorless liquid. Like other short-chained alkanes with a low molecular …

Factsheet What does the noun octane mean? There are three meanings listed in OED's entry for the noun octane. See ‘Meaning & use’ for definitions, usage, and quotation evidence.