Source : Webster's Revised Unabridged Dictionary (1913)

Xanthomelanous \Xan`tho*mel"a*nous\, a. [Pref. xantho- + Gr. ?,
   ?, black.] (Ethnol.)
   Of or pertaining to the lighter division of the Melanochroi,
   or those races having an olive or yellow complexion and black
   hair.