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 Atomic number 84 
 noun 1.A radioactive metallic element that is similar to tellurium and bismuth; occurs in uranium ores but can be produced by bombarding bismuth with neutrons in a nuclear reactor.  Synonyms: Po, polonium.
 
 
 
 
 
 WordNet 3.0 © 2010 Princeton University 
 
 
 
 
 
 
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