| Acronym | Meaning |
| INTERFACE II | Integrated Reliable Fault-Tolerant Control For Large Engines |
| MACS | Magnetic Cell Sorting System |
| RSC | Risk Specific Concentration |
| DSS | Decision Support System |
| CDM | Cold Dark Matter |
| RRHO | Rigid Rotor-harmonic Oscillator (approxn.) |
| MPPA | Modulated Pulse Potential Amperometry |
| NCID | National Center For Infectious Diseases |
| SCAF | Self-consistent Anisotropic Field |
| BMS | Buried Metallic Sulfide |