octane number

/ˌɑkˈteɪn ˈnʌmbər/
IPA guide

Definitions of octane number
  1. noun
    a measure of the antiknock properties of gasoline
    synonyms: octane rating
    see moresee less
    type of:
    amount, measure, quantity
    how much there is or how many there are of something that you can quantify
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