The meaning of the Acronym USN is...

USN is

• Update Sequence Number

More Meanings For USN:

• United States Navy
• United States Navy
• United States Navy
• United States Navy
• Unified Student Number
• United States Navy
• United States Navy
• Update Sequence Number
• Unique Service Name
• Universal Sequence Number
• United States Navy
• United States Navy
• United States Navy
• United States Navy
• United States Navy

USN is also in:

• Amateur Radio
• Assembly
• Drivers
• Environmental
• FBI Files
• Meteorology
• Military
• Museums
• NASA
• Networking
• Ocean Science
• Positions
• Transportation
• Universities