acclimate
ac•cli•mateBrE /ˈækləmeɪt/
NAmE /ˈækləmeɪt/
verb
verb forms(NAmE) = acclimatize
word origin
Competitors should arrive two weeks earlier to get acclimated to the sweltering heat. 
ac•cli•ma•tion /BrE ˌækləˈmeɪʃn; NAmE ˌækləˈmeɪʃn/ noun [uncountable]
