OXFORD 9000
📚 noun • entry_id 5115

radium

/ˈɹeɪ.dɪ.əm/
Meanings (ES + gloss)
radio • radium • rádium
The chemical element (symbol Ra) with an atomic number of 88. It is a soft, shiny and silvery radioactive alkaline earth metal.
Madame [Marie] Curie, working with her distinguished husband, isolated and first traced to its true origin the source of the marvellous power which has thus commenced to revolution…
The persistence of radio-activity on glass vessels which have contained radium is remarkable. Filters, beakers, and dishes used in the laboratory for operations with radium, after…
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