SM

Noun	1.	Sm - a gray lustrous metallic element of the rare earth group; is used in special alloys; occurs in monazite and bastnasite Synonyms: atomic number 62, samarium
	2.	SM - a master's degree in science Synonyms: Master of Science, MSc, MS

(networking)

sm - The country code for San Marino.

Sparse Mode (PIM, Multicast)atomic number 62, bastnaesite, bastnasite, metal, metallic element, monazite, samarium