| Acronym | Meaning |
| CPDAM | Cumulative Potential-derived Atomic Multipole (calcn. Method) |
| ADAPTS | Air Deliverable Antipollution Transfer System |
| HWRAP | Hazardous Waste Remedial Actions Program |
| RUP | Restricted Use Pesticide |
| MAPK | Mitogen-activated Protein Kinase |
| OPPT | Office Of Pollution Prevention And Toxics (US EPA) |
| RDX | Royal Demolition Explosive |
| FRED | Flexible Regional Emissions Data System |
| LSA | Local Space Approximation |
| WFPC2 | Wide Field Planetary Camera 2 |