What does RO stand for?

What does RO mean?

RO	Romania Regional » Countries
RO	Romanian Regional » Language Codes (2 Letters)
RO	Results Of Academic & Science » Physics
RO	Ragnarok Online Internet
RO	Ragnarok Online Miscellaneous » Hobbies
RO	Read Only Academic & Science » Physics
RO	Reverse Osmosis Academic & Science » Electronics
RO	Rule Out Medical » Physiology
RO	Regional Office Governmental » US Government
RO	Roll On Governmental » Transportation
RO	Roll Over Governmental » Transportation
RO	Research Organization Academic & Science » Universities
RO	Research Organization Business » General
RO	Right On Miscellaneous » Unclassified
RO	Ring Out Computing » Security
RO	Registered Owner Governmental » Police
RO	Room Only Miscellaneous » Unclassified
RO	Repair and Overhaul Governmental » NASA
RO	Red Orchestra Miscellaneous » Unclassified
RO	Responsible Officer Miscellaneous » Unclassified
RO	Recruitment Officer Miscellaneous » Unclassified
RO	Routine order Medical » Physiology
RO	Range Officer Governmental » Military
RO	Rebel Outpost Governmental » Military
RO	Red Oxide Academic & Science » Chemistry

Ro(noun): an artificial language for international use that rejects all existing words and is based instead on an abstract analysis of ideas