conservation of energy
noun phrase
: a principle in physics: the total energy of an isolated system remains constant irrespective of whatever internal changes may take place with energy disappearing in one form reappearing in another
Word History
First Known Use
1853, in the meaning defined above
Medical Definition
conservation of energy
noun
: a principle in physics: the total energy of an isolated system remains constant irrespective of whatever internal changes may take place with energy disappearing in one form reappearing in another
called also first law of thermodynamics, law of conservation of energy