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fermium

[ fur-mee-uhm ]

noun

, Chemistry, Physics.
  1. a transuranic element. : Fm; : 100.


fermium

/ ˈfɜːmɪəm /

noun

  1. a transuranic element artificially produced by neutron bombardment of plutonium. Symbol: Fm; atomic no: 100; half-life of most stable isotope, 257Fm: 80 days (approx.)


fermium

/ fûrmē-əm /

  1. A synthetic, radioactive metallic element of the actinide series that is produced from plutonium or uranium. Its most stable isotope is Fm 257 with a half-life of approximately 100 days. Atomic number 100.


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Word History and Origins

Origin of fermium1

1950–55; named after E. Fermi; -ium

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Word History and Origins

Origin of fermium1

C20: named after Enrico Fermi

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Example Sentences

Even after that it could be stopped, provided one had a way to get rid of the violently fissioning fermium.

He should have known automatically that it was building toward Fermium 256.

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