| Acronym | Meaning |
| ACE | Alternating Conditional Expectations |
| APMI | American Powder Metallurgy Institute |
| TRS | Transverse Rupture Strength |
| EDD | Enforcement Decision Document |
| CASS | Cyclic Activated Sludge System |
| CVB | Canonical Valence Bond |
| HWDU | Hazardous Waste Disposal Unit |
| APUHF | Approximately Projected Unrestricted Hartree-Fock |
| CCIX | Continuous Countercurrent Ion Exchange |
| CE/ESIMS | Capillary Electrophoresis/electrospray Ionization Mass Spectrometry |