Non-Oxford British English and New Zealand standard spelling of acclimatize.
1. to adapt or become accustomed to a new climate or environment Derived Formsacclimatizable, acclimatisable, acclimatable, adjectiveacclimatization, acclimatisation, acclimation, nounacclimatizer, acclimatiser, nounCollins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollinsPublishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 Cite This Source
1836; see acclimate + -ize; a more recent formation than acclimate and replacing it in many uses. Related, Acclimatized; acclimatizing.
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