acclimatization

/ə.ˌklaɪ.mə.tə.ˈzeɪ.ʃən/
/ə.ˌklaɪ.mə.tə.ˈzeɪ.ʃən/

noun

  1. The act of acclimatizing; the process of inuring to a new climate, or the state of being so inured.

  2. The climatic adaptation of an organism that has been moved to a new environment.