technetium -
A metallic chemical element symbol Tc with an atomic number of 43.
Wikipedia
Technetium is the chemical element with atomic number 43 and symbol Tc. It is the lowest atomic number element without any stable isotopes. Nearly all technetium is produced synthetically and only minute amounts are found in nature.
OmegaWiki Dictionary
Ω
technetium Chemical element with symbol Tc and atomic number 43. It is a synthetic, radioactive transition metal.
