heptane
n 1: a colorless volatile highly flammable liquid obtained from
petroleum and used as an anesthetic or a solvent or in
determining octane ratings
heptane nounDate: 1877 any of several isomeric alkanes C7H16;
especially the liquid normal isomer occurring in petroleum and
used especially as a solvent and in determining octane numbers
Heptane \Hep"tane\, n. [Gr. "epta` seven.] (Chem.)
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.
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