What does URR stand for?

What does URR mean?

URR	Urea Reduction Ratio Medical » Physiology
URR	Urrao, Colombia Regional » Airport Codes
URR	Unconstrained Requirements Report Governmental » Military
URR	Unconstrained Requirements Report Governmental » NASA
URR	UHF (Ultra-High Frequency) Radio Receiver Computing » Telecom
URR	UHF Radio Receiver Community » Media
URR	UHF (Ultra-High Frequency) Radio Receiver Academic & Science » Electronics
URR	UHF Radio Receiver Governmental » Military
URR	UHF Radio Receiver Governmental » NASA
URR	Usual Running Rate Governmental » Transportation
URR	Un- Resourced Requirement Governmental » Military
URR	Union Railroad Company ( Pittsburgh, Pennsylvania) Regional » Railroads
URR	Unexpired Risk Reserve Business » Accounting