Samarium definitions

sə-mâr'ē-əm, -măr'-
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.
noun
8
0
A chemical element, one of the rare-earth elements: symbol, Sm; at. no. 62
noun
7
0
A silvery-white metallic element of the lanthanide series that exists in several forms and has seven naturally occurring isotopes. It is used to make glass that absorbs infrared light and to absorb neutrons in the fuel rods of nuclear reactors. Atomic number 62; atomic weight 150.36; melting point 1,072°C; boiling point 1,791°C; specific gravity approximately 7.50; valence 2, 3.
4
0
A metallic chemical element (symbol Sm) with an atomic number of 62.
noun
0
0

Origin of samarium

After samarskite, in turn honoring Vasili Samarsky-Bykhovets