| Acronym | Meaning |
| ISM | Interstellar Medium |
| ICM | Institute For Crisis Management |
| AQL | Acceptable Quality Levels |
| TNOA | Target Natural Orbital Approximation |
| CEA | Carcinoembryonic Antigen |
| HCO | Heavy Cycle Oil |
| VTE | Vertival Tube Exchanger |
| SPEM | Scanning Photoemission Microscopy |
| MR-MP2 | Multireference Moeller-Plesset For Two-configuration Wave Function |
| SBUV | Solar Backscatter UV Instrument |