| Acronym | Meaning |
| PNO | Pseudonatural Orbital |
| PALS | Positron Annihilation Lifetime Spectroscopy |
| IRCWD | International Reference Center For Waste Disposal |
| FBCB | Fixed Bed Circulating Bioreactor (for Wastewater Treatment) |
| PSA | Pressure Sensitive Adhesive |
| PLC | Programmable Logic Controller |
| IUPAP | International Union Of Pure And Applied Physics |
| HSA | Hexanesulfonic Acid |
| TFB | Thin Film Balance |
| SF1 | Steroidogenic Factor 1 |