- habituation (n.)
- mid-15c., "action of forming a habit; customary practice," from Medieval Latin habituationem (nominative habituatio), noun of action from past participle stem of Late Latin habituare "to bring into a condition or habit of the body," from Latin habitus "condition, appearance, dress" (see habit (n.)). Meaning "condition of being habituated" is from 1816.
