| Acronym | Meaning |
| IUPPA | The International Union Of Air Pollution Prevention Associations |
| ASS | Argininosuccinate Synthetase |
| HWD | Hazardous Waste Disposal |
| HHH | Henon-Heiles Hamiltonian |
| RTT | Resonant Tunneling Transistor |
| IGBT | Insulated Gate Bipolar Transistor |
| HMA | Hot Mix Asphalt |
| CNDO | Complete Neglect Of Differential Overlap |
| EUROTRAC | European Experiment Of Transport And Transformation Of Environmentally Relevant Trace Constituents In The Troposphere Over Eur |
| CPR | Casting Pressing Rolling |