The meaning of the Acronym PIO is...

PIO is

• Pain In The Oopher

More Meanings For PIO:

• Port Installed Options
• Programmed Input Output
• Parallel Input Output
• Port Input Output
• Programmed Input Output
• Processor Input Output
• Parrallel Input And Output
• Past Inputs and Outputs
• Pain In The Oopher
• Process Impact And Outcome
• Pioneer Corporation of Japan
• Property Investment Options
• Public Information Office
• Pilot-Induced Oscillation
• Payload Integration Plan

PIO is also in:

• Funnies
• General
• Hardware
• NASA
• Networking
• NYSE Symbols
• Software
• Stock Exchange