The Collaborative International Dictionary
Poikilothermal
Poikilothermal \Poi`ki*lo*ther"mal\ (-th[~e]r"mal), Poikilothermic \Poi`ki*lo*ther"mic\ (-th[~e]r"m[i^]k), a. [Gr. poiki`los changeable + E. thermal, thermic.] (Physiol.) Having a varying body temperature. See Homoiothermal.
Wiktionary
poikilothermal
a. poikilothermic