relativistic mass

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noun 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.

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Words nearby relativistic mass

relative topology, relative wind, relativism, relativist, relativistic, relativistic mass, relativistic quantum mechanics, relativity, relativize, relator, relatum

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use relativistic mass in a sentence

Their bodies were later found incinerated and buried in mass graves outside of town.
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Beyond the huge American flag that hung over the street, the mile-long mass of cops ended.
Funeral Protest Is Too Much for NYPD Union Boss|Michael Daly|January 5, 2015|DAILY BEAST
“The United States had gone to war declaring it must destroy an active weapons of mass destruction program,” the Times reported.
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Google itself has taken a break and put plans for mass production on hold.
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A colleague overheard two conservative Mass. lawmakers talking about what “the gays” could do.
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Charred beams and blackened walls showed stark and gaunt in the glow of a smoldering mass of wreckage.
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But hitherto, before these new ideas began to spread in our community, the mass of men and women definitely settled down.
The Salvaging Of Civilisation|H. G. (Herbert George) Wells
The Turks were no longer in mass but extended in several lines, less than a pace between each man.
Gallipoli Diary, Volume I|Ian Hamilton
Thus among the huge mass of accumulated commodities the simplest wants would go unsatisfied.
The Unsolved Riddle of Social Justice|Stephen Leacock
Edward Winslow died; one of the first settlers of Plymouth colony, Mass., and afterwards its governor.
The Every Day Book of History and Chronology|Joel Munsell

Scientific definitions for relativistic mass

relativistic mass

[ rĕl′ə-tə-vĭs′tĭk ]

In Special and General Relativity, the observed mass of an object moving with respect to the observer. The relativistic mass is a function of the rest mass and the velocity of the object. Compare rest mass.