| Acronym | Meaning |
| CIBS | Corrections To An Incomplete Basis Set (a Perturbation Theory) |
| BPTI | Bovine Pancreatic Trypsin Inhibitor |
| DDM | 4,4'-diaminodiphenyl Methane |
| CSAMT | Controlled-source Audio-magnetotelluric Technique |
| PFZ | Polar Frontal Zone |
| SFMS | Sector Field Mass Spectrometry |
| EDCF | Endothelium-derived Contracting Factor |
| MED | Minimal Erythema Dose |
| P-T-T-D | Pressure-temperature-time-deformation Path (for Metamorphic Rocks) |
| CCDZP | Correlation-consistent Double-zeta (plus) Polarization (basis Set) |