cosmic ray
Pronunciation
/kˈɑːzmɪk ɹˈeɪ/

Definition & Meaning of "cosmic ray"in English

Cosmic ray
01

a high-energy particle, mainly originating from outside the Solar System, that travels through space at nearly the speed of light

Grammatical Information
Animacy status
Inanimate
Composition
Compound
Countable
Plural form
cosmic rays
Examples
Cosmic rays play a role in shaping the Earth's atmosphere and climate.
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