Noun: ununtrium
Usage: archaic (=nihonium)
Usage: archaic (=nihonium)
- A radioactive transuranic element, with atomic number 113
"Ununtrium was first synthesized in 2003 by Russian and American scientists";
- Uut, element 113, atomic number 113, nihonium, Nh
Type of: chemical element, element
Encyclopedia: Ununtrium