| Acronym | Meaning |
| EFTC | European Fluorocarbon Technical Committee |
| PSTC | Pressure Sensitive Tape Council |
| TRPH | Total Recoverable Petroleum Hydrocarbons |
| HEM | Heat-exchanger Method (in Manuf. Of Crystalline Silicon) |
| NDP | Net Driving Pressure (in Membrane Reverse Osmosis) |
| DWP | Dynamic Wet Pressure |
| ASM | Acoustic Surface Measurement |
| APSTNG | Associated-particle Sealed-tube Neutron Generator |
| PI | Pollution Index |
| PF | Polar Front |