ectothermic(redirected from ectothermous)
Also found in: Thesaurus, Medical.
ec·to·ther·mic(ĕk′tə-thûr′mĭk) also ec·to·ther·mal (ĕk′tə-thûr′məl)
Of or relating to an organism that regulates its body temperature largely by exchanging heat with its surroundings; cold-blooded.
(of all animals except birds and mammals) having a body temperature that varies with the temperature of the surroundings