F f


    • US Pronunciation
    • US IPA
    • [fur-mee-uh m]
    • /ˈfɜr mi əm/
    • US Pronunciation
    • US IPA
    • [fur-mee-uh m]
    • /ˈfɜr mi əm/

Definitions of fermium word

  • noun fermium a transuranic element. Symbol: Fm; atomic number: 100. 1
  • noun fermium The chemical element of atomic number 100, a radioactive metal of the actinide series. Fermium does not occur naturally and was discovered in 1953 in the debris of the first hydrogen bomb explosion. 1
  • noun fermium 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.) 0
  • noun fermium a radioactive, metallic chemical element, one of the actinides, produced by intense neutron bombardment of plutonium, as in a cyclotron: symbol, Fm; at. no., 100 0
  • noun fermium A transuranic chemical element (symbol Fm) with an atomic number of 100. 0

Information block about the term

Origin of fermium

First appearance:

before 1950
One of the 5% newest English words
1950-55; named after E. Fermi; see -ium

Historical Comparancy

Parts of speech for Fermium


fermium popularity

A pretty common term. Usually people know it’s meaning, but prefer to use a more spread out synonym. About 55% of English native speakers know the meaning and use word.
According to our data about 53% of words is more used. This is a rare but used term. It occurs in the pages of specialized literature and in the speech of educated people.

fermium usage trend in Literature

This diagram is provided by Google Ngram Viewer

Top questions with fermium

  • where is fermium found?
  • what is fermium?
  • how many protons does fermium have?
  • what is fermium named after?
  • how much does fermium cost?
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