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
Origin of seaborgiumModL, after Seaborg + -ium
An artificially produced radioactive element with atomic number 106 that has only been produced in trace amounts. The isotope with mass number 266 has the longest confirmed half-life (21 seconds), although heavier isotopes with longer half-lives have been reported. See Periodic Table.
Origin of seaborgiumAfterGlenn Theodore Seaborg
- A transuranic chemical element (symbol Sg) with atomic number 106
Named for Glenn T. Seaborg.