Princessium is a chemical element listed on the Table of Elements. It is a member of the hypersonic series. (TNG: "Rascals")
The element is a reference to Diana, Princess of Wales, who was known as "Lady Di".
| Hypersonic series | |
|---|---|
| Elements: | Kryptonite • Stoogeium • Stoogeian • Purseronite • Princessium • Tngonian • Estonianium • Dilithium • Curly • Poi |
| Other series: | Gamma series • Omega series • World series • Transonic series • Mega series |