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1. (n.) polonium
a radioactive chemical element discovered by Pierre and Marie Curie in 1898.
Etymology: (< F, =polon- (< ML Polonia Poland) +-ium -ium2)
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| Definition of 'polonium' |
Princeton's WordNet |
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1. (noun) polonium, Po, atomic number 84
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
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| Definition of 'polonium' |
U.S. National Library of Medicine |
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1. polonium
Polonium. A radioactive element that is a member of the chalcogen family. It has the atomic symbol Po, atomic number 84, and the atomic weight of the isotope with the longest half-life (209Po) is 208.98. It decays by alpha-emission.
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Definitions of polonium 
