The meaning of the Acronym USM is...

USM is

• Underground Spot Mafia

More Meanings For USM:

• UnSharp Masking
• User Session Management
• Ultra Sonic Motor
• Unifying Semantic Model
• University of Southern Mississippi
• Universiti Sains Malaysia
• University of Southern Maine
• University System of Maryland
• University Science Malaysia
• Unstoppable Sex Machine
• Underground Soldierz Militia
• United States Cellular Corporation
• Unlisted Securities Market
• Ultra-Slow Motor
• United States Marines

USM is also in:

• Adults
• AMEX Symbols
• Electronics
• General
• Military
• Physics
• Products
• Science Fiction
• Security
• Universities