cosmic ray

Noun
  1. 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 (synset 111461803)
    is a type of: ionizing radiation - high-energy radiation capable of producing ionization in substances through which it passes
    is a part of: cosmic radiation - radiation coming from outside the solar system

Found on Word Lists

Other Searches