polonium

n. radioactive chemical element

Polonium (IPA: ) is a chemical element that has the symbol Po and atomic number 84. A rare and highly radioactive metalloid, polonium is chemically similar to tellurium and bismuth, and it occurs in uranium ores. Polonium has been studied for possible use in heating spacecraft. It is unstable; all isotopes of polonium are radioactive.
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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
(synonym) Po, atomic number 84
(hypernym) metallic element, metal

n. polonium, radioactive chemical element

n. polonium, radioactive chemical element