ALL meanings of octane number
oc·tane num·ber
O o - noun octane number (of gasoline) a designation of antiknock quality, numerically equal to the percentage of isooctane by volume in a mixture of isooctane and normal heptane that matches the given gasoline in antiknock characteristics. 1
- noun octane number a measure of the quality of a petrol expressed as the percentage of isooctane in a mixture of isooctane and n-heptane that gives a fuel with the same antiknock qualities as the given petrol 0
- noun octane number a number representing the antiknock properties of a gasoline, fuel mixture, etc., determined by the percentage of isooctane that must be mixed with normal heptane to produce the knocking quality of the fuel being tested: the higher the number, the greater the antiknock properties 0
- noun octane number The octane number of a fuel, especially gasoline, is a measure of its anti-knock properties. 0