octane definition

  • noun:
    • some of various isomeric paraffin hydrocarbons using formula C8H18, present in petroleum and used as a fuel and solvent.
    • An octane number.
    • Any of the eighteen isomeric aliphatic hydrocarbons (C8H18) present in petroleum, especially an iso-octane 2,2,4 trimethyl-pentane; they truly are used as fuels and solvents.
    • anyone of several metametric hydrocarbons (C8H18) associated with methane (paraffin) show. The most crucial is a colorless, volatile, inflammable fluid, present in petroleum, and a constituent of gas or ligroin.
    • An oily hydrocarbon, C8H18, associated with the paraffin series. It takes place in petroleum, and it is among main constituents of ligroin. It comes at 124° C. The name is sometimes fond of diisobutyl (C8H18).
    • any isomeric concentrated hydrocarbon found in petroleum and utilized as a fuel and solvent

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