| Acronym | Meaning |
| RQCISD | (spin) Restricted QCISD |
| FOMBT | First-order Many-body Theory |
| BART | Biological Activity Reaction Test |
| EGCR | Experimental Gas-cooled Reactor |
| LBF | Local Basis Function Method (for Solid State Band Structure) |
| PDB | Peedee Belemnite |
| FSR | Fixed Salt Recovery (in Regeneration Of Blowdown From HCN Scrubber) |
| NRFE | Normalised Relative Fit Error |
| SBH | Schottky-barrier Height |
| CSA | Cambridge Scientific Abstracts |