| Acronym | Meaning |
| GWKB | Generalized Wentzel-Kramers-Brillouin |
| GAGP | Generalized Antisymmetrized Geminal Power (wave Function) |
| RIDA | Reverse Isotope Dilution Analysis |
| WFI | Water For Injection (pharmaceutical Term) |
| NAPPA | Nucleic Acid Programmable Protein Array |
| CWTC | Chemical Waste Transportation Council |
| DMC | Dynamic Matrix Control |
| ICM | Intracluster Medium |
| EBIR | Energy Based Integral Retention (in Electronic-structure Calcns.) |
| FO-ECP | Frozen Orbital-effective Core Potential |