| Acronym | Meaning |
| CONCAWE | Conservation Of Clean Air And Water In Western Europe [European Community Organization] |
| XRR | X-ray Reflectometry |
| UDI | Utility Data Institute (power Generation) |
| PSI-BLAST | Position-specific Iterated BLAST |
| SOCI | Second-order Configuration Interaction |
| ATDC | After Top Dead Center (gasoline And Diesel Engine Timing) |
| EFB | European Federation Of Biotechnology |
| AECMA | European Association Of Aerospace Manufacturers |
| SIM | Stress-induced Martensite |
| ASO | Atomic Spin Orbital |