| ARD | absolute reaction of degeneration; acute radiation disease; acute respiratory disease; adult respira... |
|---|---|
| CAO | chronic airway obstruction; coronary artery obstruction |
| SAO | small airway obstruction; splanchnic artery occlusion; subvalvular aortic obstruction |
| RC | an electronic circuit containing a resistor and capacitor in series; radiocarpal; reaction center; r... |
| ARDS | acute respiratory distress syndrome; adult respiratory distress syndrome |