| Acronym | Meaning |
| APN | Aminopeptidase N |
| RI/FS | Remedial Investigation/feasibility Study (Superfund) |
| EFIN | Environmental Financing Information Network |
| MSX | Midcourse Space Experiment |
| RSCF | Relativistic Self-consistent Field |
| OCIS | Optics Classification And Indexing Scheme |
| NRM | Natural Remanent Magnetization |
| FACTS | Facilities And Company Tracking System |
| SLAP | Standard Light Antarctic Precipitation |
| PBDD | Polybrominated Dibenzodioxin(s) |