| Acronym | Meaning |
| GDIM | Generalized Diatomics-in-molecules (theory) |
| DAS | Direct Absorption Spectroscopy |
| GRASP | Gradient Accelerated Spectroscopy |
| R&D | Research And Development |
| ACC | American Chemistry Council |
| IVF | In Vitro Fertilization |
| LSW | Localized Spherical Wave (in Electronic Structure Calcns.) |
| CRADA | Cooperative Research And Development Agreement |
| ROSH | Registry Of Occupational Safety And Health |
| CDFT | Chemical-density-functional Theory |