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Related to poikilothermy: Homeothermy, ectothermy


An organism, such as a fish or reptile, having a body temperature that varies with the temperature of its surroundings.

[Greek poikilos, spotted, various; see peig- in Indo-European roots + -therm.]

poi′ki·lo·ther′mi·a (-thûr′mē-ə), poi′ki·lo·ther′my (-thûr′mē) n.
poi′ki·lo·ther′mic (-mĭk) adj.

poikilothermy, poikilothermism

the state or condition of being cold-blooded, as reptiles and other animals. Cf. homoiothermy.poikilothermal, poikilothermic, poikilothermous, adj.
See also: Blood and Blood Vessels
References in periodicals archive ?
Some authors extrapolated the habitat requirements of other Apodidae swifts to possibly allow a reversible, temporary torpidity or partial poikilothermy in developing Black Swift chicks and adults (Koskimies 1948, 1950; Udvardy 1954) but true torpor has not been identified in Black Swifts (Lowther and Collins 2002).
Life exists within a range of temperature with certain physiological adaptations such as poikilothermy, selection of preferred temperature in the natural water column, variations in water habitats, regulation of water loss and other metabolic processes (7).