Acclimation. This term involves adaptive physiological responses to experimentally induced changes in particular climatic factors. An example is training for a competition in a hot environment by exercising inside a hot environmental chamber for an hour a day.
Acclimatization. This refers to adaptive physiological or behavioral changes
occurring in an individual in response to changes in the natural climate. In contrast to the heat acclimation process just described, there is the much more appealing acclimatization process of spending a week living and training in the Caribbean during
the depths of a Canadian winter.
Acclimatization is adaptation to a new climate (a new temperature or altitude or environment