n. [ Thermo- + -gen. ] (Old Chem.) Caloric; heat; regarded as a material but imponderable substance. [ 1913 Webster ]
a. (Physiol.) Relating to heat, or to the production of heat; producing heat; thermogenous;
a. [ Thermo- + -genous. ] (Physiol.) Producing heat; thermogenic. [ 1913 Webster ]