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

Examples of conservation of energy in a Sentence

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Word History

First Known Use

1853, in the meaning defined above

Time Traveler
The first known use of conservation of energy was in 1853

Dictionary Entries Near conservation of energy

Cite this Entry

“Conservation of energy.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/conservation%20of%20energy. Accessed 28 Mar. 2024.

Kids Definition

conservation of energy

: a principle in physics that states that energy can neither be created nor destroyed and that the total energy of a system by itself remains constant

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

More from Merriam-Webster on conservation of energy

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