Examples from the Web for radium
During his spare time Johnny had delved into these and had been fascinated by the story of radium.Riddle of the Storm|Roy J. Snell
The name for this element, radium, was proposed by Madame Curie, who had also suggested the term "radio-activity."A History of Science, Volume 5(of 5)|Henry Smith Williams
When excision is impracticable, benefit may be derived from the use of radium or of the X-rays.
It has been proved that all the β- and γ-rays emitted by radium salts are really due to certain of these secondary products.Alchemy: Ancient and Modern|H. Stanley Redgrove
Recourse should be had to the use of radium both before and after operation, otherwise recurrence is all but inevitable.
British Dictionary definitions for radium
- a highly radioactive luminescent white element of the alkaline earth group of metals. It occurs in pitchblende, carnotite, and other uranium ores, and is used in radiotherapy and in luminous paints. Symbol: Ra; atomic no: 88; half-life of most stable isotope, 226 Ra: 1620 years; valency: 2; relative density: 5; melting pt: 700°C; boiling pt: 1140°C
- (as modifier)radium needle