| Acronym | Meaning |
| PDS | Piecewise Direct Standardization |
| BGH | Bovine Growth Hormone |
| DAB | Diaminobenzidine (usually 3,3') |
| ERCS | Emergency Response Cleanup Services |
| CFSE | Crystal Field Stabilization Energy |
| NPV | Net Present Value {economics} |
| OWPE | Office Waste Programs Enforcement |
| EBPVD | Electron Beam Physical Vapor Deposition |
| POCV | Pair Orthogonality Constrained Variation Method |
| XRFA | X-ray Fluorescence Analysis |