English▸ noun [mass noun] the process of making or becoming accustomed or used to something:
the training of the horse does not depend on force but on habituation.
▪ Psychology the diminishing of an innate response to a frequently repeated stimulus:
habituation was leading to a marked drop in arousal level in these subjects.
– ORIGIN late Middle English (in the sense ‘formation of habit’): from French or from Latin habitatio(n)-, from late Latin habituare (see habituate).