Skip to definition.
Get the FREE one-click dictionary software for Windows or the iPhone/iPad and Android apps

Noun: polonium  pu'low-nee-um
  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
    - Po, atomic number 84

Derived forms: poloniums

Type of: metal, metallic element

Encyclopedia: Polonium