noun🔗ShareOktanAny 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."The car engine requires high octane fuel to prevent knocking and improve performance. "Der Automotor benötigt Kraftstoff mit hohem Oktan, um ein Klingeln zu verhindern und die Leistung zu verbessern.compoundsubstancechemistryfuelChat with AIVocabulary GamePractice Reading
