The meaning of the Acronym RO is...

RO is

• Routine order
• Rule Out
• Radon Occurrence
• Reproductive Organ

More Meanings For RO:

• Ring Out
• Recieve Only (TTY)
• Rough Opening
• Red Oxide
• Reverse Osmosis
• Results Of
• Read Only
• Research Organization
• Red Outer
• Ragnarok Online
• Relational Operator
• Right On
• Roof Open
• Recruitment Officer
• Responsible Officer

RO is also in:

• Architecture
• Chemistry
• Colors
• Electronics
• Hobbies
• Physics
• Security
• Telecom
• Unfiled
• Universities