relativistic

/หˆษนษ›l.ษ™.tษ™หŒvษชst.ษชk/
adjective
  1. 1

    Of or relating to relativity.

  2. 2

    At or near the speed of light.

  3. 3

    Of or relating to relativism.

Source: https://en.wiktionary.org/wiki/relativistic