Dictionary.com

Popular Searches

 Thesaurus.com

mass-energy equation

American  
[mas-en-er-jee] / ˈmæsˈɛn ər dʒi /

noun

Physics.

  1. 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.

Etymology

Origin of mass-energy equation

First recorded in 1940–45

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.