Dictionary
sa•mar•i•um
Pronunciation: (su-mâr'ē-um), [key]—
n. Chem.
a rare-earth metallic element discovered in samarskite.
Symbol: Sm;
at. wt.: 150.35;
at. no.: 62;
sp. gr.: 7.49.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.