Webster's 1913 Dictionary
HEPTANE
Hep "tane, n. Etym: [Gr. "epta ` seven. ] (Chem. )
Defn: Any one of several isometric hydrocarbons, C7H16, of the paraffin series (nine are possible, four are known ); -- so called because the molecule has seven carbon atoms. Specifically, a colorless liquid, found as a constituent of petroleum, in the tar oil of cannel coal, etc.
New American Oxford Dictionary
heptane
hep tane |ˈhepˌtān ˈhɛpˌteɪn | ▶noun Chemistry a colorless liquid hydrocarbon of the alkane series, obtained from petroleum. [Chem. formula: C 7 H 16; several isomers, esp. the straight-chain isomer ( n -heptane ).] ORIGIN late 19th cent.: from hepta- ‘seven ’ (denoting seven carbon atoms ) + -ane 2 .
Oxford Dictionary
heptane
heptane |ˈhɛpteɪn | ▶noun Chemistry a colourless liquid hydrocarbon of the alkane series, present in petroleum spirit. ●Chem. formula: C 7 H 16; several isomers, especially the straight-chain isomer ( n -heptane ). ORIGIN late 19th cent.: from hepta- ‘seven ’ (denoting seven carbon atoms ) + -ane 2 .
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