• synonyms


See more synonyms for relativistic on Thesaurus.com
  1. of or relating to relativity or relativism.
  2. Physics.
    1. subject to the special or the general theory of relativity.
    2. (of a velocity) having a magnitude that is a significant fraction of the speed of light.
    3. (of a particle) having a relativistic velocity: radiation from relativistic electrons.
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Origin of relativistic

First recorded in 1885–90; relativist + -ic
Related formsrel·a·tiv·is·ti·cal·ly, adverbul·tra·rel·a·tiv·is·tic, adjectiveun·rel·a·tiv·is·tic, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for relativistically


  1. physics having or involving a speed close to that of light so that the behaviour is described by the theory of relativity rather than by Newtonian mechanicsa relativistic electron; a relativistic velocity
  2. physics of, concerned with, or involving relativity
  3. of or relating to relativism
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Derived Formsrelativistically, adverb
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012