a chemical element, one of the rare-earth elements: symbol, Sm; at. no. 62
Origin of samariumModL: so named (1879) by Boisbaudran (see gallium) ; from French samarskite (see samarskite), in which it occurs + -ium
A silvery or pale gray metallic rare-earth element found in monazite and bastnaesite and used as a dopant for laser materials, in infrared absorbing glass, and as a neutron absorber in certain nuclear reactors. Atomic number 62; atomic weight 150.36; melting point 1,072°C; boiling point 1,794°C; specific gravity (approximately) 7.520 (25°C); valence 2, 3. See Periodic Table.
Origin of samariumsamar(skite) + –ium.
- A metallic chemical element (symbol Sm) with an atomic number of 62.
After samarskite, in turn honoring Vasili Samarsky-Bykhovets