ultrarelativistic

adjective

Moving at a speed very close to the speed of light.

Scrabble 22
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Meanings

adjective
  1. natural sciencesMoving at a speed very close to the speed of light.

Origin

From ultra- + relativistic.

Full word history & related roots →
Cite this entry
APA

ultrarelativistic. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/ultrarelativistic

MLA

“ultrarelativistic.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/ultrarelativistic. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “ultrarelativistic,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/ultrarelativistic.

Source: ultrarelativistic on Wiktionary, CC BY-SA 4.0.