octane
noun
- chemical compound
- fuel performance measure
Wiktionary
Pronunciation: /ˈɒkteɪn/
noun
Etymology: From oct- + -ane.
- 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.
- octane number