What does acclimatize mean?
The definition of 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.