| Abbreviation | Definition |
|---|---|
| AB | Acid Base |
| AB | Acid Bath |
| AB | Ammonia Borane |
| ABAB | Applied Biochemistry and Biotechnology |
| ABCC | American Board Of Clinical Chemistry |
| ABCDF | Aberdeen Chemical Agent Disposal Facility (US Army) |
| ABE | Adiabatic Binding Energy |
| ABF | Ajinomoto Build-up Film |
| ABS | Absorb |
| ABS | Acrylonitrile Butadiene Styrene |
| ABS | Alkyl BenzeneSulfonate |
| ABV | Alcohol By Volume |
| ABW | Alcohol By Weight |
| AC | Acid Controller |
| Ac | Actinium |
| AC | Activated Carbon |
| AC | Active Count |
| AC | Adriamycin and Cytoxan |
| AC | Aromatic Carbon |
| ACACS | Auto Covariance Of Averaged Chemical Shift |