A combining form from Gr. qe`rmh heat, qermo`s hot, warm; as in thermochemistry, thermodynamic. [ 1913 Webster ]

{ or } n. [ NL. ] (Med.) Loss of power to distinguish heat or cold by touch. [ Webster 1913 Suppl. ]

n. (Physics) An instrument for recording simultaneously the pressure and temperature of a gas; a combined thermograph and barograph. [ Webster 1913 Suppl. ]

n. [ Thermo- + barometer. ] 1. (Physics) An instrument for determining altitudes by the boiling point of water. [ 1913 Webster ]

2. A siphon barometer adapted to be used also as a thermometer. [ Webster 1913 Suppl. ]

n. [ Thermo- + battery. ] A thermoelectric battery; a thermopile. [ 1913 Webster ]

n. [ Thermo- + cautery. ] (Surg.) Cautery by the application of heat. [ 1913 Webster ]

Paquelin's thermocautery, thermocautery by means of a hollow platinum point, which is kept constantly hot by the passage through it of benzine vapor. [ 1913 Webster ]

{ } a. (Chem. Physics) Of or pertaining to thermochemistry; obtained by, or employed in, thermochemistry. [ 1913 Webster ]

n. [ Thermo- + chemistry. ] That branch of chemical science which includes the investigation of the various relations existing between chemical action and that manifestation of force termed heat, or the determination of the heat evolved by, or employed in, chemical actions. [ 1913 Webster ]

a. [ Thermo- + Gr. &unr_;, &unr_;, color. ] Pertaining to or designating heat rays that have undergone selective absorption and are therefore analogous to colored light rays. [ Webster 1913 Suppl. ]

n. [ Thermo- + Gr. &unr_; coloring. ] (Physics) The property possessed by heat of being composed, like light, of rays of different degrees of refrangibility, which are unequal in rate or degree of transmission through diathermic substances. [ 1913 Webster ]