| ARIMA | autoregressive integrated moving average |
|---|---|
| ARIS | auto-regulated inspiratory support |
| ARL | Association of Research Libraries |
| ARL | Association of Research Libraries; average remaining lifetime |
| ARLD | alcohol related liver disease |
| ARM | adrenergic receptor material; aerosol rebreathing method; ambulatory renal monitor; anorectal manometry; anxiety reaction, mild; Armenian [hamster]; artificial rupture of membranes; atomic resolution microscopy |
| ARMD | Age-Related Macular Degeneration; 노인성 황반 형성 |
| ARMS | adverse reaction monitoring system; amplification refractory mutation system |
| ARN | acute renal necrosis; acute retinal necrosis; arcuate nucleus; Association of Rehabilitation Nurses |
| ARNMD | Association for Research in Nervous and Mental Diseases |