Source : Webster's Revised Unabridged Dictionary (1913)

Xanthelasma \Xan`the*las"ma\, n. [NL.; Gr. xanqo`s yellow +
   'e`lasma a metal plate.] (Med.)
   See {Xanthoma}.

Source : WordNet®

xanthelasma
     n : xanthoma of the eyelids; occurs chiefly in the elderly