- mass and energy considered as equivalent and interconvertible, according to the theory of relativity
Examples from the Web for mass-energy
"Take that carrion and stuff it in a mass-energy converter," he said.Space Viking
Henry Beam Piper
There was a collapsium plant, with its own mass-energy converter.
This was in line with familiar twentieth-century concepts of mass-energy transformation.The Variable Man
Philip K. Dick
Remember those big wire baskets, down at the mass-energy converters?
In the first place, there's a full-sized power-reactor, and a mass-energy converter.