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# mass-energy equation

[ mas-en-er-jee ]

/ ˈmæsˈɛn ər dʒi /

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noun Physics.

the equation, E=mc2, formulated by Albert Einstein, expressing the equivalence between mass and energy, where E is energy, m is mass, and c is the velocity of light.

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## Origin of mass-energy equation

First recorded in 1940–45

## Words nearby mass-energy equation

mass defect, massé, massed practice, Massena, mass-energy, mass-energy equation, mass-energy equivalence, Massenet, masses, masseter, masseteric artery

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