| Acronym | Meaning |
| HDD | Halogenated Dibenzodioxin(s) |
| CNTF | Ciliary Neurotrophic Factor |
| BPD | Bronchopulmonary Dysplasia |
| NERC | Natural Environment Research Council (UK) |
| SCBC | Self-consistent Basis And Configuration |
| LCDO | Linear Combination Of Diatomic Orbitals |
| OBK | Oppenheimer-Brinkman-Kramers (approxn. In Atom-ion Electron-exchange Calcns.) |
| BUN | Blood Urea Nitrogen |
| MAPLE | Madelung Part Of Lattice Energy |
| FLO | Face Localized Orbital |