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1. WordNet® 3.0 (2006)
fermium
    n 1: a radioactive transuranic metallic element produced by
         bombarding plutonium with neutrons [syn: fermium, Fm,
         atomic number 100]

2. The Collaborative International Dictionary of English v.0.48
fermium \fermium\ n.
   the transuranic element of atomic number 100; symbol Fm. The
   atomic weight of the most stable isotope, having a half-life
   of about 80 days, is 257. The first isotope, Fm255 was
   discovered in 1952 in the debris of a thermonuclear
   explosion. Other istopes have been produced in nuclear
   reactors and by decay of other transuranic elements. --Handb.
   Ch. Phys. 61.

   Syn: Fm.
        [WordNet 1.5]

3. The Elements (07Nov00)
fermium
Symbol: Fm
Atomic number: 100
Atomic weight: (253)
Radioactive metallic transuranic element, belongs to the actinoids. Ten
known isotopes, most stable is Fm-257 with a half-life of 10 days. First
identified by Albert Ghiorso and associates in the debris of the first
hydrogen-bomb explosion in 1952.


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