Warm-blooded means keeping a steady body heat whatever the weather. Warm-blooded animals, a warm-blooded creature, warm-blooded and active.
The cost is enormous, since a warm-blooded animal needs many times the food of a cold-blooded one of the same size. Biologists prefer endothermic, because the blood is not the point at all.
1adjectivewarm-bloodedKeeping a steady body heat whatever the weather.
“Unlike lizards, warm-blooded animals such as mice stay active on cold nights.”
warm-blooded is a quality.
Warm plus blooded, from the old belief that the blood itself carried the animal's heat.
From warm + blooded.
Etymology from Wiktionary, CC BY-SA
Practised in Dinosaurs & Prehistory