polonium
n. கதிரியக்க விளைவுள்ள அணு எண்.க்ஷ்4 கொண்ட உலோகத் தனிம வகை.
Po*lo"ni*um, n. [NL. So named after Poland, in L. form Polonia, one of the discoverers being a Pole.] (Chem.) Defn: A supposed new element, a radioactive substance discovered by M. and MMe. Curie in pitchblende. It is closely related chemically to bismuth. It emits only alpha rays and is perhaps identical with radium F.