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A Writer's Dictionary:

caesium Definition


Dictionary Home » Words Starting with C » cadet branch ... calcium oxide » caesium


caesium
cesium
noun
    1. chem.
      (symbol Cs, atomic number 55) a soft silvery-white metallic element formed by the fission of uranium, and used in photoelectric cells and certain optical instruments.
Etymology: 19c: Latin, from caesius bluish-grey.



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