Search Result for "acclimatisation": 
Wordnet 3.0

NOUN (1)

1. adaptation to a new climate (a new temperature or altitude or environment);
[syn: acclimatization, acclimatisation, acclimation]



WordNet (r) 3.0 (2006):

acclimatisation
    n 1: adaptation to a new climate (a new temperature or altitude
         or environment) [syn: acclimatization, acclimatisation,
         acclimation]