| Acronym | Meaning |
| NZRPA | Normalized Zero-range Potential Approxn. |
| OBD | On-board Diagnosis |
| ACTH | Adrenocorticotrophic Hormone (reg:9003-56-9) |
| QCISDT | Quadratic CI (with) Single (and) Double (and) Triple (excitations) |
| EXGEM | Extended Geminal (model Correlated Wave Function) |
| LPMA | Laser-probe Microanalysis |
| PP-MRD-CI | Pseudopotential-multireference Double Excitation-CI |
| OBD | Optical Beam Deflection |
| TMA | Transcription-mediated Amplification |
| OB/OD | Open Burn/open Detonation |