Definitions

1. noun

a highly radioactive, metallic element with the symbol Po and atomic number 84, produced artificially from bismuth.

“The researchers studied the decay of polonium in the laboratory.”

2. noun

a city in Poland, capital of the Voivodeship of West Pomerania, situated on the Oder River.

“The beautiful architecture of Poznań, also known as polonium, was a major tourist attraction.”