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seaborgium

[ see-bawr-gee-uhm, see-bawr- ]

noun

, Chemistry, Physics.
  1. a superheavy, synthetic, radioactive element with a very short half-life. : Sg; : 106.


seaborgium

/ ˈsiːbɔːɡɪəm /

noun

  1. a synthetic transuranic element, synthesized and identified in 1974. Symbol: Sg; atomic no: 106
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012


seaborgium

/ sē-bôrgē-əm /

  1. A synthetic, radioactive element that is produced by bombarding californium with oxygen ions or bombarding lead with chromium ions. Its most long-lived isotopes have mass numbers 259, 261, 263, 265, and 266 with half-lives of 0.9, 0.23, 0.8, 16, and 20 seconds, respectively. Atomic number 106.


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Word History and Origins

Origin of seaborgium1

First recorded in 1965–70; officially assigned to element 106 in 1997; named after U.S. chemist Glenn T. Seaborg; -ium ( def )
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Word History and Origins

Origin of seaborgium1

C20: named after Glenn Seaborg

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Seaborgsea-born