Definition of acclimatory
: of or relating to the physiological adjustment made by an organism to a change in its immediate environment Land plants … have developed sophisticated mechanisms that allow for both immediate and acclimatory responses to changing environments.— Stanislaw Karpinski, Science, 23 Apr. 1999 … when compared with fish and other ectothermic animals, amphibians appear to have less capacity for acclimatory change …— Robert E. Ricklefs and Gary L. Miller, Ecology, 2000
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