The meaning of the Acronym RR is...

RR is

• Racing Replica
• Rat Racing
• Road Racing
• Run Rest
• Roller Rocker
• Race Replica
• Run Run
• Rookies Restricted
• Race Ready

More Meanings For RR:

• Rapid Rise
• Removal Rate
• Rugged Ridge
• Rarum Rarisimus
• Relevant Ranks
• Risk Ratio
• Red Rain
• Risk Reduction
• Results Ready
• Re Register
• Research Report
• Registration Room
• Receiving Record
• Revenue Recognition
• Ramage and Ramage

RR is also in:

• Accounting
• Chemistry
• Electronics
• Firms
• Geology
• Libraries
• Mathematics
• Meteorology
• Ocean Science
• Universities