conservation of energy

noun phrase

Definition of conservation of energy 

: 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

First Known Use of conservation of energy

1853, in the meaning defined above

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The first known use of conservation of energy was in 1853

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conservation of energy

noun

Medical Definition of conservation of energy 

: 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

More from Merriam-Webster on conservation of energy

Britannica.com: Encyclopedia article about conservation of energy

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