Source : Webster's Revised Unabridged Dictionary (1913)

Acclimatize \Ac*cli"ma*tize\, v. t. [imp. & p. p.
   {Acclimatized}; p. pr. & vb. n. {Acclimatizing}.]
   To inure or habituate to a climate different from that which
   is natural; to adapt to the peculiarities of a foreign or
   strange climate; said of man, the inferior animals, or
   plants.

Source : WordNet®

acclimatize
     v : get used to a certain climate; "They never acclimatized in
         Egypt" [syn: {acclimatise}, {acclimate}]