D defs.my
Entry 1 sense Webster, 1913

Assuefaction

· As·sue·fac·tion · IPA /ˌæ.swɪˈfæk.ʃən/
01 n. The act of accustoming, or the state of being accustomed; habituation.
  1. 1.
    The act of accustoming, or the state of being accustomed; habituation.[Obs.]
    “Custom and studies efform the soul like wax, and by assuefaction introduce a nature.” Jer. Taylor.