D defs.my
Entry 1 sense Webster, 1913

Habituation

/(hȧ*bĭt"ū̇*ā"shŭn)/ · Ha·bit·u·a·tion · IPA /həˌbɪt.juˈeɪ.ʃən/
01 n. The act of habituating, or accustoming; the state of being habituated.
  1. 1.
    The act of habituating, or accustoming; the state of being habituated.