The meaning of the Acronym S is...

S is

• Smart
• School
• Suspension

More Meanings For S:

• Sulfur
• Saturating
• Sound
• Siemans (inverse of Ohms - unit of admittance)
• Switch
• Source
• Squarely
• Short
• Superior
• Scholarly
• Satisfactory
• Student
• Side
• Sin
• Sum

S is also in:

• Chemistry
• Electronics
• Mathematics
• Physics
• Universities