ectothermic

Of or relating to an ectotherm; having a body temperature that varies depending on the outside temperature.

wechselwarm, poikiloterm, kaltblütig

эктоте́рмныйektotérmnyj, холоднокровныйxolodnokrovnyj, пойкилотермныйpojkilotermnyj

of animals except birds and mammals; having body temperature that varies with the environment