Origin of plutoniumModL, after the planet Pluto + -ium: so named (1942) by G. T. Seaborg, one of the United States physicists who isolated it, because its atomic number is next after that of neptunium, as Pluto's orbit is next after Neptune's
Origin of plutoniumAfter the dwarf planet Pluto ( from the fact that it follows neptunium in the periodic table )
See Periodic Table
- The transuranic chemical element with atomic number 94 and symbol Pu.
After Pluto (the entity formerly considered to be a planet).