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Found in Anh - Anh (Wordnet)

Definition Noun 1. A chemical element : A solid, silvery-gray, radioactive, transuranic element. Its atoms are fissile, meaning they can be split when bombarded with neutrons. It is found in minute quantities in uranium ores but is typically produced artificially in nuclear reactors. Thirteen isotopes are known, with plutonium-239 being the most significant. Usage As a chemical symbol : is the...