cosmic radiation
English Thesaurus
1. radiation coming from outside the solar system (noun.phenomenon)
| hypernym | : | radiation, |
| definition | : | energy that is radiated or transmitted in the form of rays or waves or particles (noun.phenomenon) |
| part holonym | : | cosmic ray, |
| definition | : | 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 (noun.phenomenon) |
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