| AOS | American Ophthalmological Society; American Otological Society; anodal opening sound; anterior [o]es... |
|---|---|
| AP | accessory pathway; accounts payable; acid phosphatase; acinar parenchyma; action potential; active p... |
| A&P | anterior and posterior; assessment and plans; auscultation and percussion |
| APA | action potential amplitude; aldosterone-producing adenoma; Ambulatory Pediatric Association; America... |
| APDER | anterior-posterior dual energy radiography |