| Acronym | Meaning |
| ASP | Activated Sludge Plant Or Process |
| EINECS | European Inventory Of Existing Commercial Chemical Substances |
| DTL | Drift Tube Linac |
| ALADDIN | Atmospheric Layer And Density Distribution Of Ions And Neutrals (NASA) |
| IECA | International Erosion Control Association |
| LATS | Long-Acting Thyroid Stimulator |
| TARIS | Thermal Atomization Resonance Ionization Spectrometry |
| PIES | Partial Integration Exterior Scaling (in Calcns. On Resonance Positions And Lifetimes |
| VES | Vertical Elec. Sounding |
| HBT | Heterojunction Bipolar Transistor |