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octane

Syllabification: (oc·tane)
Pronunciation: /ˈäktān/
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Definition of octane

noun

Chemistry
  • a colorless flammable hydrocarbon of the alkane series, obtained in petroleum refining.
    • Chemical formula: C8H18; many isomers, especially the straight-chain isomer ( n-octane). See also isooctane

Origin:

late 19th century: from octo- 'eight' (denoting eight carbon atoms) + -ane2

octane in other Oxford dictionaries

Definition of octane in the British & World English dictionary
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