conservation of energy

English Thesaurus

1. the fundamental principle of physics that the total energy of an isolated system is constant despite internal changes (noun.cognition)

hypernym	:	law of thermodynamics,
definition	:	(physics) a law governing the relations between states of energy in a closed system (noun.cognition)

hypernym	:	conservation,
definition	:	(physics) the maintenance of a certain quantities unchanged during chemical reactions or physical transformations (noun.cognition)