cosmic ray
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English[edit]
Noun[edit]
cosmic ray (plural cosmic rays)
- (astronomy) An energetic particle originating outside our solar system.
- (astronomy) Cosmic radiation: a stream of cosmic rays.
Usage notes[edit]
The use of the words "ray" and "radiation" implies incorrectly that cosmic rays are electromagnetic waves, similar to light rays and X-rays; cosmic rays were so named before their nature was known.
Hypernyms[edit]
Hyponyms[edit]
Translations[edit]
energetic particle
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cosmic radiation
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References[edit]
- cosmic ray on Wikipedia.Wikipedia