polonium

Từ điển WordNet v3.1 - WordNet Dictionary

noun

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
• Syn:
Po, atomic number 84
• Hypernyms:
metallic element, metal

• Từ đồng nghĩa / Synonyms:
  Po, atomic number 84