What does SM mean in Unclassified?
This page is about the meanings of the acronym/abbreviation/shorthand SM in the Miscellaneous field in general and in the Unclassified terminology in particular.
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What does SM mean?
- samarium, Sm, atomic number 62(noun)
- a grey lustrous metallic element of the rare earth group; is used in special alloys; occurs in monazite and bastnasite