The Collaborative International Dictionary of English v.0.48:

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

WordNet (r) 3.0 (2006):

homeothermic
    adj 1: of birds and mammals; having constant and relatively high
           body temperature [syn: homoiothermic, homeothermic,
           homothermic]