The meaning of the Acronym RIU is...

RIU is

• Refractive Index Unit

More Meanings For RIU:

• Resource Information Unit
• Relay Interface Unit
• Refractive Index Unit
• Riphah International University
• Radio Interface Unit
• Remote Interface Unit
• Regulatory Impact Unit

RIU is also in:

• Databases
• Hardware
• Military
• NASA
• Physics
• Police
• Universities