Thermodynamics :  (noun)

1: the branch of physics concerned with the conversion of different forms of energy

Newtonian physics, acoustics, aerodynamics, aerophysics, applied physics, astrophysics, barodynamics, basic conductor physics, biodynamics, biophysics, calorimetry, chemical physics, cryogenics, crystallography, cytophysics, dynamics, electron physics, electronics, electrophysics, fluid dynamics, geodynamics, geophysics, hydrodynamics, kinematics, kinesiology, kinetics, macrophysics, magnetohydrodynamics, mathematical physics, mechanics, medicophysics, microphysics, myodynamics, natural philosophy, natural science, nuclear physics, optics, philosophy, physic, physical chemistry, physical science, physicochemistry, physicomathematics, physics, psychophysics, pyrotechnic, pyrotechnics, pyrotechny, radiation physics, radionics, solar physics, solid-state physics, statics, stereophysics, theoretical physics, thermochemistry, thermotics, zoodynamics, zoophysics,