| ID | identification; iditol dehydrogenase; immunodeficiency; immunodiffusion; immunoglobulin deficiency; ... |
|---|---|
| TD | tabes dorsalis; tardive dyskinesia; T-cell dependent; temporary disability; terminal device; tetanus... |
| AEI | arbitrary evolution index; atrial emptying index |
| arb | arbitrary unit |
| AU | according to custom [Lat. ad usum]; allergenic unit; ngstrom unit; antitoxin unit; arbitrary unit; A... |