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seaborgium

[see-bawr-gee-uh m, see-bawr-] /siˈbɔr gi əm, ˈsi bɔr-/
noun, Chemistry, Physics.
1.
a superheavy, synthetic, radioactive element with a very short half-life. Symbol: Sg; atomic number: 106.
Formerly unnilhexium, element 106.
Origin of seaborgium
named after U.S. chemist Glenn T. Seaborg; see -ium
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for seaborgium
  • seaborgium is the only element to have been publicly named after a living person.
British Dictionary definitions for seaborgium

seaborgium

/ˈsiːbɔːɡɪəm/
noun
1.
a synthetic transuranic element, synthesized and identified in 1974. Symbol: Sg; atomic no: 106
Word Origin
C20: named after Glenn Seaborg
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
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seaborgium in Science
seaborgium
  (sē-bôr'gē-əm)   
Symbol Sg
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. See Periodic Table.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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