The meaning of the Acronym RA is...

RA is

• Regular Army
• Rubber Armoring
• Remote Area
• Red Armor
• Rally America
• Military Serial Number prefix for non-drafted Volunteer
• Regiment of Artillerists

More Meanings For RA:

• Radio Activity
• Registered Architect
• Radium
• Radium
• Rosin Activated
• Random Amplitude
• Random Average
• Resident Assistant
• Regional Academy
• Research Assistant
• Research Analysis
• Remuneration And Audit
• Return Authorization
• Royal Ambassadors
• Regulatory Affairs

RA is also in:

• Accounting
• Amateur Radio
• Architecture
• Chemistry
• Electronics
• Firms
• General
• Mathematics
• Universities