Definition of Cosmic ray

1. 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.

Generic synonyms: Ionizing Radiation
Group relationships: Cosmic Radiation

Lexicographical Neighbors of Cosmic Ray

cosmetic techniques
cosmetologies
cosmetologist
cosmetologists
cosmetology
cosmic
cosmical
cosmically
cosmic background radiation
cosmic dust
cosmic dust
cosmic microwave background
cosmic microwave background radiation
cosmic radiation
cosmic radiation
cosmic ray (current term)
cosmic rays
cosmic time
cosmid
cosmid
cosmids
cosmid map
cosmism
cosmisms
cosmist
cosmists
Cosmocampus
Cosmocampus profundus
cosmochemical
cosmochemist

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