| Acronym | Meaning |
| RSCF | Relativistic Self-consistent Field |
| SXRFM | Synchrotron X-ray-fluorescence Microprobe |
| DRI | Differential Refractive Index |
| PBL | Planet Boundary Layer (in Atmospheric Chemistry And Physics) |
| EPEC | Enteropathogenic Escherichia Coli |
| IACS | International Annealed Copper Standard |
| BRSV | Bovine Respiratory Syncytial Virus |
| RVB | Resonating Valence Bond (theory Of High-tc Superconductors) |
| BDD | Boron-doped Diamond |
| UPA | Unitary-pole Approximation |