Undecane \Un"de*cane\, n. [L. undecim eleven.] (Chem.)
A liquid hydrocarbon, C11H24, of the methane series, found
in petroleum; -- so called from its containing eleven carbon
atoms in the molecule.
[1913 Webster]
Hendecane \Hen"de*cane\, n. [Gr. "e`ndeka eleven.] (Chem.)
A hydrocarbon, C11H24, of the paraffin series; -- so called
because it has eleven atoms of carbon in each molecule.
Called also endecane, undecane.
[1913 Webster]