HABITUATION

habituation

(noun) a general accommodation to unchanging environmental conditions

addiction, dependence, dependance, dependency, habituation

(noun) being abnormally tolerant to and dependent on something that is psychologically or physically habit-forming (especially alcohol or narcotic drugs)

Source: WordNet® 3.1

Etymology

Noun

habituation (countable and uncountable, plural habituations)

The act of habituating, or accustoming; the state of being habituated.

(psychology) The process of becoming accustomed to an internal or external stimulus, such as a noxious smell or loud noise.

Source: Wiktionary

Ha*bit`u*a"tion, n. Etym: [Cf. F. habituation.]

Definition: The act of habituating, or accustoming; the state of being habituated.

Source: Webster’s Unabridged Dictionary 1913 Edition