| Abbreviation | Definition |
|---|---|
| AIDE | Adaptive Independent Drinking Equipment |
| AIDP | Acute Idiopathic Demyelinating Polyneuropathy |
| AIF | Anterior Interbody Fusion |
| AIH | Artificial Insemination Homologous |
| AIHA | Autoimmune Hemolytic Anemia |
| AIIS | Anterior Inferior Iliac Spine |
| AILD | Alcohol Induced Liver Disease |
| AIMD | Active Implantable Medical Device |
| AIMS | Abnormal Involuntary Movement Scale |
| AION | Anterior ischemic optic neuropathy |
| AIP | Acute Idiopathic Pericarditis |
| AIP | Acute Infectious Polyneuritis |
| AIP | Acute Intermittent Porphyria |
| AIP | Acute Interstitial Pneumonia |
| AIP | Anti-Inflammatory Protein |
| AIP | Atypical Interstitial Pneumonia |
| AIP | Auto-Immune Pancreatitis |
| AIR | Activator of Immune Response |
| AIRG | Acute Insulin Response to Glucose |
| AIS | Androgen Insensitivity Syndrome |