| Acronym | Meaning |
| PNO | Pseudonatural Orbital |
| UVP | Ultrasonic Vibration Potential |
| AWRE | Atomic Weapons Research Establishment |
| AOES | Actinometry Optical Emission Spectroscopy |
| POF | Polymer Optical Fiber |
| CVD | Cardiovascular Disease |
| HRMSI | High-Resolution Multispectral Instrument (EOS) |
| PTSA | Pressure And Temperature Swing Adsorption |
| AQS | Air Quality Subsystem (subsystem Of AIRS) |
| OCAP | Open-channel Air Preheater |