seaborgium

American  

[see-bawr-gee-uhm, see-bawr-] / siˈbɔr gi əm, ˈsi bɔr- /

noun

Chemistry, Physics.

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

---

seaborgium British  

/ ˈsiːbɔːɡɪəm /

noun

1. a synthetic transuranic element, synthesized and identified in 1974. Symbol: Sg; atomic no: 106

---

seaborgium Scientific  

/ 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

---

Etymology

Origin of seaborgium

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

Example Sentences

Glenn Seaborg was immortalised in his lifetime by element 106, seaborgium, which he considered a far greater honour than the Nobel Prize he won along with McMillan in 1951.

From BBC • Sep. 19, 2014

It was well earned, says Prof Nitsche, for Seaborg's impact on the periodic table went much further than just seaborgium or Pu.

From BBC • Sep. 19, 2014

He led the research team that discovered plutonium and was the first living person to have an element, seaborgium, named for him.

From Time Magazine Archive