使習慣,習慣,熟習
Habituation \Ha*bit`u*a"tion\, n. [Cf. F. habituation.] The act of habituating, or accustoming; the state of being habituated.
habituation n 1: being abnormally tolerant to and dependent on something that is psychologically or physically habit-forming (especially alcohol or narcotic drugs) [syn: {addiction}, {dependence}, {dependency}] 2: a general accommodation to unchanging environmental conditions