Homeotherm
A homeotherm is a warm-blooded animal (such as homo sapiens).
Another term for us warm-blooded creatures is endotherm.
Those of us who are homeotherms or endotherms are as opposed to a poikilotherm (an organism such as a frog that is cold-blooded) and a stenotherm (a creature that can only survive only within a very narrow temperature range).
Homeotherm is all Greek.
The 'homeo-' comes from the Greek 'homo' meaning 'the same' + '-therm' comes from the Greek 'therme' meaning 'heat' = the same heat.