| Abbreviations | Meaning |
 | AA | Adrenocortical Autoantibody; African American; Aggregated Albumin; [bacterial] Aggregative Adherence; Agranulocytic Angina; Alcohol Abuse |
 | TABC | Total Aerobic Bacteria Count; Typhoid, Paratyphoid A, Paratyphoid B, And Paratyphoid C [vaccine] |
 | L | Outer Membrane Layer Of Cell Wall Of Gram-negative Bacteria (layer) |
 | ABN | Acute Bacterial Nephritis |
 | AFB | Acid Fast Bacillus |
 | BAC, BAC | Bacillus |
 | SBIAB | Secondary Bacterial Infection Acute Bronchitis |
 | EBA | Early Bacterial Activity; Epidermolysis Bullosa Acquisita; Epidermolysis Bullosa Atrophicans; Extrahepatic Biliary Atresia; Orthoethoxybenzoic Acid |
 | NBS | No Bacteria Seen |
 | BIP | Bacterial Intravenous Protein |
 | RNA | Radionuclide Angiography; Registered Nurse Anesthetist; Ribonucleic Acid; Rough, Noncapsulated, Avirulent [bacterial Culture] |
 | AFB | Acid-fast Bacillus; Aflatoxin B; Aflatoxin Biomarker; Air Fluidized Bed; Aortofemoral Bypass |
 | BACT, BACT | Bacterium; Bacterium, Bacteria |
 | F | A Conjugative Plasmid In F+ Bacterial Cells |
 | PDB | Phosphorus-dissolving Bacteria |