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radium emanation

American  

noun

Chemistry.
  1. (formerly) radon.


Etymology

Origin of radium emanation

First recorded in 1900–05

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

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A. Oxygenator    A radium emanation for the bath.

From Valere Aude Dare to Be Healthy, Or, The Light of Physical Regeneration by Dechmann, Louis

The radium emanation is a gas about 111 times heavier than hydrogen; to this gas Sir William Ramsay has given the name niton.

From The Story of Alchemy and the Beginnings of Chemistry by Muir, M. M. Pattison

"He must be using a ray of some sort, possibly a radium emanation," he muttered to himself.

From Astounding Stories, May, 1931 by Various

In addition, the spectral lines of uranium, radium, and the radium emanation have been reported as being found in the sun's spectrum and also in the new star, Nova Geminorum 2.

From A Brief Account of Radio-activity by Venable, Francis Preston

Mix very slowly and quietly in order not to release too much of the radium emanation.

From Valere Aude Dare to Be Healthy, Or, The Light of Physical Regeneration by Dechmann, Louis

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