- (archaic) that branch of physics dealing with the science of heat
- (archaic) thermodynamics
Etymologically, thermotics bears the same relationship to thermodynamics as mechanics bears to dynamics (cf. statics), or that hydraulics bears to hydrodynamics (cf. hydrostatics). However, thermodynamics is the more usual term in modern usage.
Coined by William Whewell, 1831, along with photistics.