Definitions for octane number

This page provides all possible meanings and translations of the word octane number

Random House Webster's College Dictionary

oc′tane num`ber(n.)

  1. a designation of antiknock quality of gasoline, 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. Also called oc′tane rat`ing.

    Category: Chemistry

Origin of octane number:

1930–35

Princeton's WordNet

  1. octane number, octane rating(noun)

    a measure of the antiknock properties of gasoline

Wiktionary

  1. octane number(Noun)

    a measure of the antiknock properties of an automobile fuel; isooctane having an octane number of 100, a fuel with the same antiknock properties as a mixture of 90% isooctane and 10% heptane having an octane number of 90

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