Noun
ununennium
The systematic element name for the (as yet undiscovered) chemical element with an atomic number of 119 (symbol Uue).
Hence einsteinium-254 was used as a target in the attempted synthesis of ununennium (element 119) in 1985 by bombarding it with calcium-48 ions at the superHILAC linear accelerator at Berkeley, California. Source: Internet
Relativistic effects also cause a very large drop in the polarisability of ununennium. Source: Internet