| Acronym | Meaning |
| LVDT | Linear Variable Differential Transformer |
| RCS | Reaction Control System |
| AED | Atomic Emission Detector |
| NHF(FC) | Nonrelativistic Numerical Hartree-Fock (frozen-core ) |
| NESHAPS | National Emission Standards For Hazardous Air Pollutants |
| HGNC | HUGO Gene Nomenclature Committee |
| SEAM | Scanning Electron Acoustic Microscopy |
| IPA | Independent-particle Approximation (in Quantum Calcns. On Solids) |
| DAIRS | Differential Absorption Infrared Sensor |
| PCA | Procoagulant Activity |