Definition of isooctane in English:


Line breaks: iso|oc¦tane
Pronunciation: /ˌʌɪsəʊˈɒkteɪn


[mass noun] Chemistry
A liquid hydrocarbon present in petroleum. It serves as a standard in the system of octane numbers.
More example sentences
  • They are rated based on their ability to resist knocking against a standard mixture of two hydrocarbons, isooctane and heptane.
  • Mix gasoline with the right number of hydrocarbons and you get isooctane.
  • The end result is the addition of isobutane to isobutylene to form isooctane, the molecule that is the basis of octane ratings seen at the gas pumps.

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