Sm
symbol
• the chemical element samarium.
SM
abbreviation
• sadomasochism.
• Sergeant Major.
• short metre.
samarium
noun
• the chemical element of atomic number 62, a hard silvery-white metal of the lanthanide series.
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.
short metre
noun
• a metrical pattern for hymns in which the stanzas have four lines with 6, 6, 8, and 6 syllables.
