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poikilotherm



A "cold-blooded" animal, i.e., an animal whose body temperature fluctuates with that of the environment. Fish, reptiles, and amphibians are poikilotherms. Because these creatures cannot maintain a constant body temperature, in the way that homeotherms (warm-blooded animals) can, they are greatly affected by climatic changes.


Related entries

   • body temperature
   • ectotherm


Related category

   • ZOOLOGY


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