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Definition of fermium noun from the Oxford Advanced Learner's Dictionary

fermium

noun

/ˈfɜːmiəm/

/ˈfɜːrmiəm/

[uncountable]

(symbol Fm)

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a chemical element. Fermium is a very rare radioactive metal.
Word Origin1950s: from the name of E. Fermi (1901-1954), Italian-born American atomic physicist + -ium.

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See fermium in the Oxford Advanced American Dictionary

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