| Acronym | Meaning |
| CIAP | Climatic Implications Of Atmospheric Pollution |
| RFC | Inhalation Reference Concentration |
| MTD | Mean Therapeutic Dose |
| UEATC | European Union For Technical Agreements In Construction (French; L'Union Europeenne Pour L'Agrement Technique Dans La Construc |
| SCFA | Short Chain Fatty Acid |
| MPI | Multiphoton Ionization |
| VD-RIOS | Vibrational Diabatic-rotational Infinite Order Sudden |
| NPOESS | National Polar Orbiting Environmental Satellite System |
| OPC | Optical Particle Counter |
| ERW | Electrical Resistance Welding |