isooctane
i so oc tane |ˌīsōˈäktān ˌaɪsoʊˈɑkteɪn | ▶noun Chemistry a liquid hydrocarbon present in petroleum. It serves as a standard in the system of octane numbers. [Chem. formula: (CH 3 ) 3 CCH 2 CH (CH 3 )CH 3. ]
isooctane |ˌʌɪsəʊˈɒkteɪn | ▶noun [ mass noun ] Chemistry a liquid hydrocarbon present in petroleum. It serves as a standard in the system of octane numbers. ●Chem. formula: (CH 3 ) 3 CCH 2 CH (CH 3 )CH 3.