Samarium
- A chemical element with the symbol Sm and atomic number 62, belonging to the lanthanide series of the periodic table. It is a rare earth metal that is silvery-white in appearance and is used in various applications such as in samarium-cobalt magnets, in cancer treatment, and in certain types of lighting. nounSamarium is used in the production of powerful permanent magnets.The element samarium can be found in minerals like monazite and bastnäsite.