noun[mass noun] Physics
The mass of a body regarded as energy, according to the laws of relativity.
- Back then, radioactivity had recently been discovered and mass energy conservation was under assault because of its discovery.
- Thus, they must have a rest mass energy roughly equal to the unification energy.
- In the special theory of relativity Einstein demonstrated that neither mass nor energy were conserved separately, but that they could be traded one for the other and only the total mass energy was conserved.
For editors and proofreaders
Line breaks: mass en¦ergy
Definition of mass energy in:
What do you find interesting about this word or phrase?
Comments that don't adhere to our Community Guidelines may be moderated or removed.