| Acronym | Meaning |
| KHN | Knoop Hardness |
| MC | Mclean-Chandler Basis Set |
| SSMBE | Solid Source Molecular Beam Epitaxy |
| YSZ | Yttria-stabilized Zirconia |
| ACPTQ | Approx. Coupled Pair (theory Cor. For Connected) Triple And Quadruple Excitations |
| CCSS | Co-composted Sewage Sludge |
| QCI | Quadratic Configuration Interaction |
| APECS | Auger Photoelectron Coincidence Spectroscopy |
| OPC | Optical Particle Counter |
| SAF | Symmetry Adapted Function (in CI Calcns.) |