Noun
adaptation that counters a change to an organism's environment
(pharmacology) The development of tolerance; the adaptation of the body's homeostatic mechanisms to counteract a drug effect.
(biology) The evolutionary adaptation of one species to adaptive changes by another.
(psychology) The distortion of one sensory modality that accompanies adaptation to alterations in a perceptual cues from a related modality.
Source: en.wiktionary.org