What does RVR stand for?

What does RVR mean?

RVR	Realm Vs. Realm Miscellaneous » Science Fiction
RVR	River Governmental » Military
RVR	River Academic & Science » Ocean Science
RVR	Runway Visual Range Academic & Science » Meteorology
RVR	Runway Visual Range Governmental » Transportation
RVR	Realm Versus Realm Community » Sports
RVR	Rapid Ventricular Response Medical » Physiology
RVR	River Valley Resources Business » Firms
RVR	Recursive Variance Reduction Academic & Science » Mathematics
RVR	Region Vs Region Miscellaneous » Unclassified
RVR	Reload Verification Report Computing » General
RVR	Reload Verification Report Computing » Software
RVR	Reload Verification Report Governmental » Military
RVR	Reload Verification Report Governmental » NASA
RVR	Green River, Utah USA Regional » Airport Codes
RVR	Rhone Varietal Red Miscellaneous » Colors
RVR	Railer V Rocketer Miscellaneous » Unclassified
RVR	Runway Visible (or Visual) Range Governmental » NASA
RVR	Runway Visibility Recorder Governmental » Military
RVR	Reactor Vessel Rupture Academic & Science
RVR	Red River Resources Ltd Business » ASX Symbols