Definition of radium emanation in English:

radium emanation

Line breaks: ra¦dium em¦an|ation

noun

  • archaic term for radon.
    More example sentences
    • By 1900, Friedrich Dorn discovered the isotope radon - 222 and called it radium emanation (Em).
    • In 1921 Margaret Uhlig suggested that radium emanation, later known as Rn, may be the cause of the lung cancers.

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Word of the day skosh
Pronunciation: skəʊʃ
noun
a small amount; a little