| Acronym | Meaning |
| CETP | Channel Equiv. Of A Theor. Plate |
| CIP | Cold Isostatic Pressing |
| PPT | Parts Per Trillion |
| PAHO | Pan American Health Organization |
| SCM | Shell-correction Method (in Calcns. For Metal Clusters) |
| COCI | Committee On Chemistry And Industry (IUPAC) |
| LCGTO-LDF | Linear Combination Of Gaussian-type Orbitals-local Density Functional |
| MCRRPA | Multiconfiguration Relativistic Random Phase Approxn. |
| MIOSA | Modified (rotational) Infinite Order Sudden Approxn. |
| TEOS | Tetraethyl Orthosilicate |