| Acronym | Meaning |
| CAP | Continuous Absorption Process |
| RDPP | Reverse Differential-pulse Polarography |
| IVO | Improved Virtual Orbital |
| NMI | Nautical Miles |
| SU | Standard Unit |
| BCNTF | Biofilm-Controlled Nitrifying Trickling Filter (for Wastewater Treatment) |
| OTE | Oxygen Transfer Efficiency (of Aeration Diffusers) |
| CFHH | Correlation-function Hyperspherical Harmonic (method For Calcn. Of Wave Functions) |
| IGEFET | Interdigitated-gate-electrode Field-effect Transistor |
| BHT | Bottom-hole Temperature |