The meaning of the Acronym RN is...

RN is

• Radius of Neptune
• Reynolds Number

More Meanings For RN:

• Reflection Nebulosity
• Radon
• Residue Number
• Renumbering
• Recursive Normalization
• Random Number
• Response Numerical
• Rule Name
• Result Number
• Roman Numeral
• Room Number
• Registered Nurse
• Resident Nurse
• Richard Nixon
• Randy Newman

RN is also in:

• Astronomy
• Chemistry
• Famous
• Mathematics
• Positions
• Universities