The meaning of the Acronym RL is...

RL is

• Robert Long
• Ralph Lauren
• Robert Lawrence

More Meanings For RL:

• Register List
• Repository Language
• Record Length
• Relocatable Library
• Refinement Language
• Requirements Language
• Real Life
• Real Lunatic
• Reference Level
• Roof Level
• Root To Leaf
• Regular Leaf
• Reaction Level
• Return Loss
• Regression Line

RL is also in:

• Architecture
• Assembly
• Botany
• Chat
• Chemistry
• Databases
• Electronics
• General
• Geology
• Software