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2 definitions found
 for technetium
From WordNet (r) 3.0 (2006) :

      n 1: a crystalline metallic element not found in nature; occurs
           as one of the fission products of uranium [syn:
           technetium, Tc, atomic number 43]

From The Elements (07Nov00) :

  Symbol: Tc
  Atomic number: 43
  Atomic weight: (98)
  Radioactive metallic transition element. Can be detected in some stars
  the fission products of uranium. First made by Perrier and Segre by
  bombarding molybdenum with deutrons, giving them Tc-97. Tc-99 is the
  stable isotope with a half-life of 2.6*10^6 years. Sixteen isotopes are
  known. Organic technetium compounds are used in bone imaging. Chemical
  properties are intermediate between rhenium and manganese.

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