The meaning of the Acronym RI is...

RI is

• Respiratory Infection
• Recurrence Interval
• Respiratory Illness

More Meanings For RI:

• Return Index
• Register I
• Rapid Insert
• Referential Integrity
• Lotus 1-2-3 Data
• Ried Im
• Rollback Info
• Re Installing
• Ring Indicator
• Ring In
• Receiver Induced
• Random Insanity
• Rambling Irishman
• Rather Interesting
• Radical Initiator

RI is also in:

• Assembly
• Chat
• Chemistry
• Databases
• File Extensions
• Security
• Software
• Telecom