The Collaborative International Dictionary of English v.0.48:

Tridecane \Tri*dec"ane\ (tr[-i]*d[e^]k"[=a]n), n. [Pref. tri- +
   Gr. ? ten. So called from the number of carbon atoms in the
   molecule.] (Chem.)
   A hydrocarbon, C13H28, of the methane series, which is a
   probable ingredient both of crude petroleum and of kerosene,
   and is produced artificially as a light colorless liquid.
   [1913 Webster]