What does AR stand for?

What does AR mean?

AR	Argentina Regional » Countries
AR	Arkansas Regional » States
AR	Armor Governmental » Military
AR	At Risk Medical » Physiology
Ar	Argon Academic & Science » Chemistry
AR	Accounts Receivable Business » Positions
AR	Aspect Ratio Community » Media
AR	Aspect Ratio Academic & Science » Electronics
AR	Army Reserve Governmental » Military
AR	Angstrom Governmental » Suppliers
AR	Acid Reflux Medical » Physiology
AR	Army Regulation Governmental » Military
AR	Aller-retour International » French
AR	Animal Rights Miscellaneous » Unclassified
AR	Auto Regressive Business » Accounting
AR	Address Register Computing » Assembly
AR	Automatic Rifle Governmental » Military
AR	Active Region Miscellaneous » Unclassified
AR	Apple River Regional
AR	American Rivers Community » Non-Profit Organizations
AR	Administrative Record Miscellaneous » Unclassified
AR	Analytical Reagent Academic & Science » Chemistry
AR	Accelerated Reading Community » Educational
AR	Amateur Radio Academic & Science » Amateur Radio
AR	Artificial Respiration Medical » Physiology