1. (noun)samarium, Sm, atomic number 62 a grey lustrous metallic element of the rare earth group; is used in special alloys; occurs in monazite and bastnasite Synonyms: samarium, atomic number 62
2. (noun)Master of Science, MS, SM, MSc a master's degree in science Synonyms: multiple sclerosis, atomic number 62, samarium, disseminated multiple sclerosis, disseminated sclerosis, manuscript