| Acronym | Meaning |
| PHF | Projected Hartree Fock |
| DTC | Developmental Test Command [US Army] |
| IAP | Immunosuppressive Acidic Protein |
| TZP | Tetragonal Zirconia Polycrystal |
| CFM | Cubic Feet Per Minute |
| PBC | Primary Biliary Cirrhosis |
| FSSW | Friction Super Stir Welding |
| NHEJ | Nonhomologous End Joining |
| RELAX | Refrigerator Enhanced Laser Analyzer For Xenon |
| NEE | Net Ecosystem Exchange |