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

seaborgium

/ sē-bôr′gē-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.
2. See Periodic Table

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 )

Word History and Origins

Origin of seaborgium¹

C20: named after Glenn Seaborg