ununpentium

Found in Anh - Anh (Wordnet)

Definition Noun : A radioactive transuranic element : A synthetic, highly unstable chemical element with the atomic number 115. It is a superheavy element produced in particle accelerators and does not occur naturally. Usage Examples Noun : Scientists confirmed the discovery of ununpentium after a series of successful experiments. The properties of ununpentium are difficult to study due to its...