| Acronym | Meaning |
| BSC | Bundle Sheath Cellpar |
| AFCRL | Air Force Cambridge Research Laboratories |
| HMPGI | Hybrid Multiple-prism Grazing-incidence |
| AUSB | Aerobic Upflow Sludge Blanket |
| BAC | Biological Activated Carbon |
| ECCF | Exchange Correlated Crystal Field |
| SCDM | Self-consistent Diagrammatic Method (in Calcn. On Electronic Excitation Transfer) |
| BPDA | Born Point Dipole Approximation |
| ESM | Exponential-series Method |
| FPGS | Folylpolyglutamate Synthetasepar |