The meaning of the Acronym USRA is...

USRA is

• United States Rimfire Association
• Unlimited Scale Racing Association
• United States Racquetball Association
• United Slot Racers Association

More Meanings For USRA:

• Universities Space Research Association
• Universities Space Research Association
• Undergraduate Student Research Assistantship
• Universities Space Research Association
• Universities Space Research Association
• United States Railway Association
• United States Rimfire Association
• Unlimited Scale Racing Association
• United States Racquetball Association
• United Slot Racers Association

USRA is also in:

• Meteorology
• Military
• NASA
• Sports
• Transportation
• Unfiled
• Universities