adaptation
noun UK ​ /ˌæd.əpˈteɪ.ʃən/ US ​ /ˌæd.əpˈteɪ.ʃən/ also adaption, UK/əˈdæp.ʃən/
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C1 [ U ] the process of changing to suit different conditions:

The documentary is about corruption, crime and human adaptation to difficult circumstances.
His team's successful adaptation to life in the top-flight has come as no surprise.
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[ C or U ] specialized biology the process in which a living thing changes slightly over time to be able to continue to exist in a particular environment, or a change like this:

Evolution occurs as a result of adaptation to new environments.
It's these evolutionary adaptations that make aphids and other insects so destructive.
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