cosmic ray
noun Date: 1925 a stream of atomic nuclei of extremely penetrating character that enter the earth's atmosphere from outer space at speeds approaching that of light

New Collegiate Dictionary. 2001.

Look at other dictionaries:

  • cosmic ray — n [C usually plural] a stream of ↑radiation reaching the Earth from space …   Dictionary of contemporary English

  • Cosmic ray — For the film, see Cosmic Ray (film). Cosmic radiation redirects here. For some background types of cosmic radiation, see cosmic background radiation and cosmic background. The energy spectrum for cosmic rays Cosmic rays are energetic charged… …   Wikipedia

  • cosmic ray — Physics. a radiation of high penetrating power that originates in outer space and consists partly of high energy atomic nuclei. [1920 25, Amer.] * * * High speed particle (atomic nucleus or electron) that travels through the Milky Way Galaxy.… …   Universalium

  • cosmic ray — noun a) An energetic particle originating outside our solar system. b) Cosmic radiation: a stream of cosmic rays …   Wiktionary

  • cosmic ray — noun highly penetrating ionizing radiation of extraterrestrial origin; consisting chiefly of protons and alpha particles; collision with atmospheric particles results in rays and particles of many kinds • Hypernyms: ↑ionizing radiation • Part… …   Useful english dictionary

  • cosmic ray — cos′mic ray′ n. phs a radiation of high penetrating power originating in outer space and consisting partly of high energy atomic nuclei …   From formal English to slang

  • cosmic ray — noun a highly energetic atomic nucleus or other particle travelling through space at a speed approaching that of light …   English new terms dictionary

  • cosmic ray — noun (countable usually plural) a stream of radiation (2) reaching the Earth from space …   Longman dictionary of contemporary English

  • Cosmic ray visual phenomena — Cosmic ray visual phenomena, also referred to as phosphenes or light flashes , are spontaneous flashes of light visually perceived by astronauts outside the magnetosphere of the Earth, such as during the Apollo program. Researchers believe that… …   Wikipedia

  • Cosmic Ray (film) — Cosmic Ray (1962) is an experimental film directed by Bruce Conner featuring black and white footage of a nude woman with a pearl necklace, cartoons, and newsreel footage of atomic bomb explosions, all set to Ray Charles s What d I Say . External …   Wikipedia

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