Relating to or characterized by warm blood; warm-blooded; referring to animals that maintain constant body temperature through blood circulation.
From hema- (blood) plus therm- (heat, from Greek thermē) plus -ous (adjective suffix). The term literally means having warm blood, an older way of describing endothermic animals.
Hemathermous is an old-fashioned way to say 'warm-blooded,' but it reveals how biologists once thought of temperature as literally being IN the blood rather than regulated by metabolism!
Complete word intelligence in one call. Free tier — 50 lookups/day.