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noun, Physics.
a radiation of high penetrating power that originates in outer space and consists partly of high-energy atomic nuclei.
cosmic ray
A ray of radiation of extraterrestrial origin, consisting of one or more charged particles such as protons, alpha particles, and larger atomic nuclei. Cosmic rays entering the atmosphere collide with atoms, producing secondary radiation, such as pions, muons, electrons, and gamma rays. Cosmic rays (and secondary radiation) can be easily seen in a cloud chamber.


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    noun 1. a network of filaments of dark matter, believed by many astronomers to form the basis of the universe

  • Cosmid

    cosmid (kŏz’mĭd) A hybrid vector that has been spliced with plasmid DNA for cloning large pieces of DNA.

  • Cosmine

    /ˈkɒzmiːn/ noun 1. (zoology) a substance resembling dentine, forming the outer layer of cosmoid scales

  • Cosmism

    [koz-miz-uh m] /ˈkɒz mɪz əm/ noun 1. the philosophy of cosmic evolution.

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