The meaning of the Acronym RA is...

RA is

• Right Ascension
• Redifferentiation And Apoptosis
• Rainbow Alliance
• Roughness Average
• Royal Arch
• Rotate Acs
• Reader's Anonymous
• Raistlin's Apprentices
• Right Argument
• Railers Anonomous
• Really Artistic
• Rises Above
• Rahman Arrahman
• Restricted Access
• Ryan And Aneta
• Reading Assignment
• Real Annoyin
• Riders And
• Ridwaanullah Allahs
• Runs Allowed
• Recursion Available
• Radhiallahtala And
• Ramboldi Addicts
• Reference Archive
• Reader Average
• The Real Articles
• Reset Actors
• Royal Academy
• Research Airplane
• Remington Arms
• Raja Aka

More Meanings For RA:

• Return All
• Return Address
• RealAudio Audio file
• Remote Access Data file
• Rapid Access
• Restore Advanced
• Registration Authority
• Review Access
• Registry Agent
• Really Annoying
• Really Awesome
• Radio Activity
• Registered Architect
• Radium
• Radium

RA is also in:

• Amateur Radio
• Architecture
• Assembly
• Chat
• Chemistry
• Electronics
• File Extensions
• General
• Security