The meaning of the Acronym SM is...

SM is

• St. Marys Railroad Company

More Meanings For SM:

• Samarium
• Stress Migration
• Surface Mount
• Superultramodern Mathematics
• Sailor Moon
• Simple Model
• Solar Modulation
• Supplementary Materials
• Student Mail
• Student Miss
• Samsung Motors
• Singer Machine
• Stone Mill
• Standard Model
• Service Mark

SM is also in:

• Chemistry
• Electronics
• Firms
• General
• Mathematics
• Meteorology
• Universities