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radium (n.)
radioactive metallic alkaline earth element, 1899, from French radium, formed in Modern Latin from Latin radius "ray" (see radius). With metallic element ending -ium. Named 1898 after identification by Marie Curie and her husband; so called for its power of emitting energy in the form of rays.
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Definitions of radium
Dictionary entries near radium
radiometric
radioscopy
radio-telephone
radiotherapy
radish
radium
radius
Radnor
radon
radula
raffia