cosmic rays

A form of cosmic ray — Any of a range of subatomic particles, and thus also electromagnetic waves, that permeate the universe owing to their various origins within stars or from collisions outside stars. (Life on Earth is mostly shielded from them by the Earth's magnetic field, but a small amount strikes us all each day.)

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Meanings

noun
  1. pluralplural of cosmic ray
Cite this entry
APA

cosmic rays. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/cosmic%20rays

MLA

“cosmic rays.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/cosmic%20rays. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “cosmic rays,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/cosmic%20rays.

Source: cosmic rays on Wiktionary, CC BY-SA 4.0.