octane rating

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Related to Anti-Knock Index: Research octane number
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Synonyms for octane rating

a measure of the antiknock properties of gasoline

References in periodicals archive ?
The Interaction of Fuel Anti-Knock Index and Cooled EGR on Engine Performance and Efficiency," SAE Int.
The need for more fuel with a higher anti-knock index is boosting demand for blending components with higher octane ratings ("Engine design trends lead to increased demand for higher-octane gasoline", EIA, Apr 2016).
6-liter engine is designed to use regular-grade gasoline with an anti-knock index of 87, an argument could be made that the engine design is not sufficiently knock-limited to show differences in these higher-RON blends that might result from HoV effects.