The meaning of the Acronym RIO is...

RIO is

• Red Iron Oxide

More Meanings For RIO:

• Random Access Memory Input Output
• Riada Internet Objects
• Radx Input Output
• Resources Input Optimization
• Remote Input Output
• RAM (Random Access Memory) Input/ Output
• Red Iron Oxide
• Ressoruces Input Optimisation
• Restore Iraqi Oil
• Review International Organization
• Re Integration Of Offenders
• Rdf I O
• Radar Intelligence Officer
• Readiness Input And Output
• Remote Instant Office

RIO is also in:

• Chemistry
• General
• Hardware
• Unfiled