octane
/ˈɒkteɪn/ noun
Forms octanes
- noun (organic chemistry) Any of the eighteen isomeric aliphatic hydrocarbons (C₈H₁₈) found in petroleum, especially an iso-octane 2,2,4 trimethyl-pentane; they are used as fuels and solvents.
- noun octane number
Etymology
From oct- + -ane.
Webster’s 1913
- noun Any one of a group of metametric hydrocarcons (C8H18) of the methane series. The most important is a colorless, volatile, inflammable liquid, found in petroleum, and a constituent of benzene or ligroin.
Etymology [See Octa-]
Sources: Wiktionary · Webster’s 1913 — from the Wiktionary entry “octane”, CC BY-SA 4.0. Details