Definition of conservation of energy in US English:

conservation of energy


  • A principle stating that energy cannot be created or destroyed, but can be altered from one form to another.

    • ‘On a side note, you don't really need total destructive interference - even partial interference will seemingly violate conservation of energy.’
    • ‘The first law of thermodynamics is the law of conservation of energy; energy is neither created nor destroyed.’
    • ‘This sequence of events does not violate the law of conservation of energy because energy is returned quickly enough to create an overall equilibrium.’
    • ‘Since classical mechanics is pretty exact for macroscopic objects, there is never any macroscopic violation of conservation of energy.’
    • ‘The discovery of the neutrino was predicted on the basis of the principle of conservation of energy.’