Gets used to changed conditions in case it claims otherwise (12)

I believe the answer is:

acclimatises

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'gets used to changed conditions' is the definition.
I know nothing about this answer so I cannot tell whether it can be defined by this definition.

'case it claims otherwise' is the wordplay.
'otherwise' indicates anagramming the letters.
'case'+'it'+'claims'='caseitclaims'
'caseitclaims' with letters rearranged gives 'ACCLIMATISES'.

'in' acts as a link.

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I've seen this clue in the Sydney Morning Herald.

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