| Abbreviation | Definition |
|---|---|
| AAGTP | Aerobic Attached-Growth Treatment Process |
| AB | Aerobic Bacteria |
| ABEB | Archives in Biomedical Engineering Biotechnology |
| ABL | Agricultural Biotechnology Laboratory |
| ABM | Agriculture Biotech and Medical |
| ABRC | Agricultural Biotechnology Research Center |
| ABSP | Agricultural Biotechnology Support Program |
| ABWG | Animal Biotechnology Working Group |
| ACB | Asian Congress on Biotechnology |
| ACH | Air Changes Per Hour ( The movement of a volume of air in a given period of time) |
| AD | Aerobic Decomposition |
| ADP | Air Displacement Plethysmography |
| AER | Air Exchange Rate |
| AF | Aerobic Fermentation |
| AFOB | Asian Federation of Biotechnology |
| AIBA | All India Biotech Association |
| AIBM | Advances in Biotechnology Microbiology |
| AIRCA | Association of International Research and Development Centers for Agriculture |
| AJB | African Journal of Biotechnology |
| AJBMS | American Journal of Biotechnology and Molecular Sciences |