| AADC | amino acid decarboxylase |
|---|---|
| AAM | acute aseptic meningitis; American Academy of Microbiology; amino acid mixture; African American Mal... |
| AAO | American Academy of Osteopathy; American Academy of Ophthalmology; American Academy of Optometry; Am... |
| aa seq | amino acid sequence |
| AIR | amino-imidazole ribonucleotide; average impairment rating |