noun🔗ShareأوكتانAny 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. "يتطلب محرك السيارة وقودًا عالي الأوكتان لمنع الطرق وتحسين الأداء.compoundsubstancechemistryfuelChat with AIVocabulary GamePractice Reading