| AIP | acute idiopathic pericarditis; acute infectious polyneuritis; acute intermittent porphyria; aldoster... |
|---|---|
| AIR | amino-imidazole ribonucleotide; average impairment rating |
| ALI | acute lung injury; annual limit of intake; average lobe index |
| ALO | average lymphocyte output; axiolinguo-occlusal |
| ALOS | average length of stay |