| Acronym | Meaning |
| CNDO/F | Complete Neglect Of Differential Overlap/force |
| PSD | Particle Size Distribution |
| PEDS | Plasma-enhanced Deposition System |
| ITEP | Institute For Theoretical And Experimental Physics |
| SCSRC | Solids Contact Slurry Recirculating Clarifier(s) |
| HOEF | Harmonic Oscillator With External Field Model (in Collisions) |
| EBIR | Energy Based Integral Retention (in Electronic-structure Calcns.) |
| XRPD | X-ray Powder Diffraction |
| AXAF | Advanced X-ray Astrophysics Facility |
| DU | Dobson Units |