octane
/ˈɒkteɪn/noun
mass noun
1- Chemistry a colourless flammable hydrocarbon of the alkane series, present in petroleum spirit【化】辛烷。
1.1
- Chem. formula: C8H18; many isomers, especially the straight-chain isomer (n-octane).化学分子式：C8H18; 多异构体, 尤常见直链异构体(n-octane)。参见ISOOCTANE.
词源
late 19th cent.: from OCTO- 'eight' (denoting eight carbon atoms) + -ANE2 .