polonium -
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
polonium -
A chemical element symbol Po with atomic number 84.
Wikipedia
Polonium is a chemical element with the symbol Po and atomic number 84, discovered in 1898 by Marie Skłodowska-Curie and Pierre Curie. A rare and highly radioactive metalloid, polonium is chemically similar to bismuth and tellurium, and it occurs in uranium ores. Polonium has been studied for possible use in heating spacecraft.
OmegaWiki Dictionary
Ω
polonium A chemical element with symbol Po and atomic number 84, a silver gray poor metal.