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rest energy
noun
, Physics.
- the energy equivalent to the mass of a particle at rest in an inertial frame of reference, equal to the rest mass times the square of the speed of light.
rest energy
/ rĕst /
- In Special Relativity, the energy corresponding to the rest mass of a body, equal to the rest mass multiplied by the speed of light squared.
- See more at mass-energy equivalence
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Word History and Origins
Origin of rest energy1
First recorded in 1935–40
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