Antonyms of adj ectothermic

1 sense of ectothermic

Sense 1
poikilothermic, poikilothermous, heterothermic, ectothermic -- (of animals except birds and mammals; having body temperature that varies with the environment)

INDIRECT (VIA cold-blooded) -> warm-blooded -- (having warm blood (in animals whose body temperature is internally regulated))

Similarity of adj ectothermic

1 sense of ectothermic

Sense 1
poikilothermic, poikilothermous, heterothermic, ectothermic -- (of animals except birds and mammals; having body temperature that varies with the environment)
       => cold-blooded (vs. warm-blooded) -- (having cold blood (in animals whose body temperature is not internally regulated))