👉 Seminuliferous is a scientific term that refers to a mineral, which is formed from uranium (U) and other elements, such as thorium (Th), radon (Rn), and polonium (Po). These minerals are called "seminuliferous" because they contain the radioactive isotopes of U, Th, Rn, and Po. Seminuliferous minerals are often used in nuclear reactors to remove spent fuel from reactors.