The meaning of the Acronym AR is...

AR is

• Active Resistance
• Admitting Room
• Apical Rate
• Artificial Respiration
• Assisted Respiration
• At Risk
• Anti Reflux
• Acid Reflux
• Anal Retentive

More Meanings For AR:

• Argon
• Analytical Reagent
• Aspect Ratio
• Audio Rate
• Active Rainfall
• Absorptive Region
• Auto Regressive
• Account Review
• Annual Return
• Atlas Research
• All Risks
• Accounts Receivable
• Accelerated Reading
• Alternative Response
• Aspect Ratio

AR is also in:

• Accounting
• Chemistry
• Educational
• Electronics
• Firms
• General
• Media
• Meteorology
• Physics
• Positions