a synthetic transuranic element, synthesized and identified in 1974. Symbol: Sg; atomic no: 106
Word origin
C20: named after Glenn Seaborg
seaborgium in American English
(siˈbɔrgiəm)
noun
a radioactive chemical element with a very short half-life: a transactinide produced by bombarding californium or lead with high-energy nuclear particles: symbol, Sg; at. no., 106