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Vocabulary Entry
plutonium
|noun
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N
noun
A radioactive element with the symbol Pu and atomic number 94, used as a fuel in nuclear reactors and in the manufacture of nuclear weapons.
Example Sentences
"Plutonium is one of the most important fuels for nuclear reactors."
"The discovery of plutonium changed the course of nuclear research."
"Safety regulations are highly stringent when handling plutonium."