Also known as: po.
PO has various meanings in the Britannica category. Discover the full forms, definitions, and usage contexts of PO in Britannica.
Symbol:"Po" Atomic Number:"84" Atomic Mass: (209)amu. Polonium is a rare element often found in nature with uranium. It is radioactive and very dangerous. You may find it as a byproduct of reactions in a nuclear reactor.
BritannicaLast updated: