ho·me·o·therm  (hō'mē-ə-thûrm')  n. An organism, such as a mammal or bird, having a body temperature that is constant and largely independent of the temperature of its surroundings; an endotherm. ho'me·o·ther'mi·a (-thûr'mē-ə) n., ho'me·o·ther'mic (-mĭk) adj. |