Wiktionary
n. (context physics English) The increased mass of an object moving at relativistic speed relative to an observer.
WordNet
n. (physics) the mass of a body in motion relative to the observer: it is equal to the rest mass multiplied by a factor that is greater than 1 and that increases as the magnitude of the velocity increases
Usage examples of "relativistic mass".
Like most contemporary starships, she employed antigravity generators for Hypolight-speed travel, switching to her four matched Sheldon Drive crystals (for both propulsion and negation of relativistic mass/time effects) only when it was desired to surpass the critical velocity of LightSpeed.
Now it was the relativistic mass of various objects traveling at different fractions of the speed of light.
Build up enough relativistic mass so that we devastate them by gravitational effects, too, just to make sure.
The closer a ship in normal space crowded c, the speed of light, the more relativistic mass it possessed, and the more energy per kilogram of rest mass it took to accelerate it .
Envoy bore a quantum gate with capacity to give a gamma, a relativistic mass-length-time factor, of a full five thousand.
Envoybore a quantum gate with capacity to give a gamma, a relativistic mass-length-time factor, of a full five thousand.
The Engineership Est-taun Zhiffir, portal-carrying, set out from Zenerre for Ulubis less than a year after the disaster, with a travel time initially given as 307 years, later reduced by increments to level out at 269 as the Eship upped its velocity even closer to light speed, the Engineers aboard fine-tuning the systems which insulated the hauled portal from the effects of its own and the ship's relativistic mass.
Since turnover, the ship had shed most of its enormous relativistic mass.
Aft, their greenish wake took on a brighter glow as the accelerating ship shrugged off more and more L-units of relativistic mass.