noun
rest energy
Physics term: the energy equivalent of an object's rest mass, given by E=mc².
静止エネルギーは質量と光速の二乗の積で表される。
Rest energy is expressed as the product of mass and the square of the speed of light.
Kinetic energy; the energy of motion, in contrast to rest energy which is intrinsic to mass.
Compound of 静止 (seishi, 'rest, stationary') and エネルギー (enerugī, 'energy'), a calque of English 'rest energy'.