homeotherm
Pronunciation: /ˈhɒmɪə(ʊ)ˌθəːm/
(also homoiotherm)
noun
Zoology- an organism that maintains its body temperature at a constant level, usually above that of the environment, by its metabolic activity. Often contrasted with poikilotherm; compare with warm-blooded.
Origin:
late 19th century: modern Latin, from Greek homoios 'like' + thermē 'heat'