heptane

[hep-teyn]
noun
any of nine isomeric hydrocarbons, C 7 H 16 , of the alkane series, some of which are obtained from petroleum: used in fuels as solvents, and as chemical intermediates.

Origin:
1870–75; hept- + -ane

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World English Dictionary
heptane (ˈhɛpteɪn)
 
n
an alkane existing in nine isomeric forms, esp the isomer with a straight chain of carbon atoms (n-heptane), which is found in petroleum and used as an anaesthetic. Formula: C7H16
 
[C19: from hepta- + -ane, so called because it has seven carbon atoms]

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American Heritage
Science Dictionary
heptane   (hěp'tān')  Pronunciation Key 
A volatile, colorless, highly flammable liquid hydrocarbon obtained in the fractional distillation of petroleum. It is used as a standard in determining octane ratings (combustion characteristics), as an anesthetic, and as a solvent. Heptane is the seventh member of the alkane series. Chemical formula: C7H16.
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Example sentences
The above image shows a three-millimeter-wide droplet of heptane fuel burning in microgravity.
Effect of precipitation temperature on the composition of n-heptane asphaltenes.
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