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poikilotherm Syllabification: poi·ki·lo·therm
Pronunciation: /poiˈkēləˌTHərm/ /-kil-/

Definition of poikilotherm in English:


An organism that cannot regulate its body temperature except by behavioral means such as basking or burrowing. Often contrasted with homeotherm; compare with cold-blooded.
Example sentences
  • The 10-fold seasonal differences in FMR were reasonable for an ectothermic poikilotherm.
  • In addition to sequence length, differences between homeotherms and poikilotherms (hagfish, gray mullet, zebrafish, toad, and snake) occur at positions 373 and 400, respectively.
  • Winters may be shorter but they will still be very cold, while concomitant changes in insulating snow cover will have other effects on these poikilotherms.


Pronunciation: /ˌpoiˌkēləˈTHərməl/ /-ˌkil-/
Example sentences
  • However, some poikilothermal animals do not have a high concentration of SM and HSM in their lens.
Pronunciation: /ˌpoiˌkēləˈTHərmik/ /-ˌkilə-/
Example sentences
  • Little is known about the physiological time of poikilothermic animals and we know nothing about the physiological time of modular organisms.
  • In poikilothermic animals temperature can be a major variable.
  • As evidenced by the articles in this volume, a recent increase in interest in the mating systems of poikilothermic vertebrates has focused primarily on fishes, a few amphibians, and squamate reptiles.
Example sentences
  • This mode of thermoregulation, that can neither be classified as homeothermy (constant temperature as in birds or mammals) or poikilothermy (as in fish, amphibians and most reptiles), has been called gigantothermy.
Definition of poikilotherm in:
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