Source : Webster's Revised Unabridged Dictionary (1913)

Chaldean \Chal*de"an\, a. [L. Chaldaeus.]
   Of or pertaining to Chaldea. -- n.
   (a) A native or inhabitant of Chaldea.
   (b) A learned man, esp. an astrologer; -- so called among the
       Eastern nations, because astrology and the kindred arts
       were much cultivated by the Chaldeans.
   (c) Nestorian.

Source : WordNet®

Chaldean
     adj : of or relating to ancient Chaldea or its people or language
           or culture [syn: {Chaldaean}, {Chaldee}]
     n 1: a wise man skilled in occult learning [syn: {Chaldaean}, {Chaldee}]
     2: an inhabitant of ancient Chaldea [syn: {Chaldaean}, {Chaldee}]