| Acronym | Meaning |
| BRE | Bond Resonance Energy |
| GS | Gelius-Siegbahn (MO Approxn.) |
| CMP | Compact Model Potential |
| GTN | Global Trend Network |
| ELLPAT | Environmental Lead Laboratory Proficiency Analytical Testing |
| DPH | Diamond Pyramid Hardness |
| PAZ | Partial Annealing Zone (fission-track) |
| EVA | Extravehicular Activity (related To Spacecraft) |
| I-TEQ | International Toxic Equivalent |
| NLLSF | Non-linear Least Square Fitting |