ha·bit·u·a·tion 
(hə-bĭch′-āshən)
(hə-bĭch′-āshən)n.
1. The process of habituating or the state of being habituated.
2. Physiological tolerance to a drug resulting from repeated use.
3. Psychology The decline in responsiveness to a stimulus due to repeated exposure.
- adventitious
- adventitiously
- adventitiousness
- adventive
- adventively
- Advent Sunday
- adventure
- adventurer
- adventuresome
- adventuresomely
- adventuresomeness
- adventuress
- adventurism
- adventurist
- adventuristic
- adventurous
- adventurously
- adventurousness
- adverb
- adverbial
- adverbially
- ad verbum
- adversarial
- adversary
- adversative