mass-energy equation

mass-en·er·gy equa·tion

M m

Definition of mass-energy equation words

noun mass-energy equation 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. 1

before 1940

One of the 7% newest English words

First recorded in 1940-45

noun

adjective

verb

adverb

pronoun

preposition

conjunction

determiner

exclamation

This term is known only to a narrow circle of people with rare knowledge. Only 1% of English native speakers know the meaning of this word.

According to our data most of word are more popular. This word is almost not used. It has a much more popular synonym.

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