GNU Collaborative International Dictionary of English

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Found one definition

1.       
   Homoiothermal, Homoiothermic , a. [Gr.  like + E. thermal.] (Physiol.) Maintaining a uniform body temperature, usually above the ambient temperature; hæmatothermal; homothermic; warm-blooded; -- applied to warm-bodied animals such as birds and mammals, because they maintain a nearly uniform temperature in spite of the great variations in the surrounding air; in distinct from the cold-blooded (poikilothermal) animals, whose body temperature follows the variations in temperature of the surrounding medium.
   Syn. -- homeothermal, homeothermic, homothermal, homothermic, homoiothermic.
   1913 Webster