samarium

 
Pronunciation: /səˈmɛːrɪəm/

noun

[mass noun]
  • the chemical element of atomic number 62, a hard silvery-white metal of the lanthanide series. (Symbol: Sm)

Origin:

late 19th century: from samar(skite), a mineral in which its spectrum was first observed (named after Samarsky, a 19th-century Russian official) + -ium