| Acronym | Meaning |
| AUMP | Annihilated Unrestricted Moeller-Plesset (spin Contaminant) |
| EBM | Electron Beam Melting |
| TEAMS | Trace Element Accelerator Mass Spectrometry |
| BAHC | Biospheric Aspects Of The Hydrological Cycle |
| MAPLE | Madelung Part Of Lattice Energy |
| IRI | International Reference Ionosphere |
| PT2D | Second-order Perturbation Theory (with) Diagonal (part Of Fock Matrix) |
| EGSB | Expanded Granular Sludge Bed |
| CASS | Cyclic Activated Sludge System |
| FBTR | Fast Breeder Test Reactor |