radium emanation

American  

noun

Chemistry.

1. (formerly) radon.

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Etymology

Origin of radium emanation

First recorded in 1900–05

Example Sentences

Decomposition of mucous membrane: Abdominal packs, partial packs, with vinegar and water, or salt and radium emanation, oxygenator and other baths, in case especially prescribed.

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

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

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

This consists of radium emanation tablets or powders and the necessary bath salts for the decarbonization of the system in all cases of what is called auto-intoxication.

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

The alpha-ray particles appear to possess the mass of helium atoms, and the growth of helium has been detected by its spectrum in a tube of radium emanation.

From Darwin and Modern Science by Seward, A. C. (Albert Charles)