poikilothermous
1. [ adjective ] of animals except birds and mammals; having body temperature that varies with the environment
Synonyms: heterothermic poikilothermic ectothermic
Related terms: cold-blooded
2. [ adjective ] (zoology) of animals except birds and mammals; having body temperature that varies with the environment
Synonyms: heterothermic poikilothermic
Related terms: cold-blooded
Similar spelling:   poikilotherm
  poikilothermic