- (of all animals except birds and mammals) having a body temperature that varies with the temperature of the surroundings
Compare homoiothermic
Collins Concise English Dictionary © HarperCollins Publishers::
poikilothermic /ˌpɔɪkɪləʊˈθɜːmɪk/, poikilothermal /ˌpɔɪkɪləʊˈθɜːməl/ adj
'poikilothermic' also found in these entries (note: many are not synonyms or translations):