| Acronym | Meaning |
| LQG | Linear Quadratic Gaussian |
| ESD | Environmental Services Division (US EPA) |
| NIBSC | National Institute For Biological Standards And Control |
| UCI | Ultrasonic Contact Impedance |
| CNIE | Committee For The National Institute For The Environment |
| TTL | Transistor-transistor Logic |
| LAMP | Lake Acidification Mitigation Project |
| ATF | Activating Transcription Factor |
| MAAC | Maximum Ambient Air Concentration |
| RBOT | Rotary Bomb Oxidn. Test |