The Collaborative International Dictionary
Poikilothermous
Poikilothermous \Poi`ki*lo*ther"mous\ (-m[u^]s), a. (Physiol.) Poikilothermal.
Wiktionary
poikilothermous
a. (alternative form of poikilothermal English)
WordNet
poikilothermous
adj. of animals except birds and mammals; having body temperature that varies with the environment [syn: poikilothermic, heterothermic, ectothermic]