| 'Greek letter alpha' | angular acceleration; first [carbon atom next to the carbon atom bearing the active group in organic... |
|---|---|
| AA | abdominal aorta; acetic acid; achievement age; active alcoholic; active assistive [range of motion];... |
| CO2 | Carbon Dioxide; 이산화탄소; 지구온난화 |
| PaCO2 | Carbon Dioxide Pressure; amount of CO2 in arterial Blood |
| AaPCO2, (A-a)PCO2 | alveolo-arterial carbon dioxide tension difference |