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1. (n.) technetium
a synthetic element obtained in the fission of uranium or by the bombardment of molybdenum.
Etymology: (1947; < Gk technēt(ós) artificial, lit., made, v. adj. of technâsthai, der. of
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| Definition of 'technetium' |
Princeton's WordNet |
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1. (noun) technetium, Tc, atomic number 43
a crystalline metallic element not found in nature; occurs as one of the fission products of uranium
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| Definition of 'technetium' |
U.S. National Library of Medicine |
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1. technetium
The first artificially produced element and a radioactive fission product of URANIUM. Technetium has the atomic symbol Tc, atomic number 43, and atomic weight 98.91. All technetium isotopes are radioactive. Technetium 99m (m=metastable) which is the decay product of Molybdenum 99, has a half-life of about 6 hours and is used diagnostically as a radioactive imaging agent. Technetium 99 which is a decay product of technetium 99m, has a half-life of 210,000 years.
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Definitions of technetium 
