Longman Dictionary of Contemporary English homepage

Topic: ELEMENTS

Date: 1900-2000
Language: Modern Latin
Origin: Pluto

plutonium

 noun
     
plu‧to‧ni‧um [uncountable]
HCE a radioactive metal that is used in the production of nuclear power, and in nuclear weapons. It is a chemical element: symbol Pu
Definition of plutonium from the Longman Dictionary of Contemporary English within
the topic ELEMENTS
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