| Acronym | Meaning |
| LPLC | Low Pressure Liquid Chromatography |
| APNO | Atomic Pair Natural Orbital |
| YAEL | Yankee Atomic Environmental Laboratory |
| IPA | Inverted Perturbation Approach (in Mol. Potential-energy Curves Calcn.) |
| FPGS | Folylpolyglutamate Synthetasepar |
| POLINAT | Pollution From Aircraft Emissions In The North Atlantic Flight Corridor |
| NES | US National Eutrophication Study |
| PCCI | Premixed Charge Compression Ignition |
| ASME | American Society Of Mechanical Engineers |
| BDST | Bed-depth Service Time |