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radium

Related topics: Elements
ra·di·um /ˈreɪdiəm/ noun [uncountableU]  
HCEa white metal that is radioactive and is used in the treatment of diseases such as cancer. It is a chemical element: symbol Ra 镭〔一种化学元素,符号为Ra
Examples from the Corpus
Origin radium
(1800-1900) Modern Latin Latin radius; → RADIUS
ra·di·um noun
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