homeothermal \homeothermal\, homeothermic \homeothermic\adj. (Biol.) having constant and relatively high body temperature; warm-blooded; same as {homoiothermal}; -- of birds and mammals. Contrasted to {poikilothermal}. Syn: homoiothermic, homoiothermal, homothermic, homothermal. [WordNet 1.5] homeothermism