| Acronym | Meaning |
| QPEN | Quantum-mech. Potential (based On Interactios Of) Electrons (and) Nuclei |
| PDEA | Preliminary Draft Environmental Assessment |
| NLLS | Nonlinear Least Squares |
| IRAK | Interleukin 1 Receptor-associated Kinase |
| EIRFT | Extended Inversion-recovery Fourier Transform |
| EPCE-F2(SIGM | Effective Pair Correlation Energy Method With The Factor-two (f2) Approximation For Sigma-electron Systems |
| BCT | Body Centered Tetragonal |
| WCUB | Wang Chang-Uhlenbeck-de Boer (quantum-mech. Relation In Rotational Relaxation Calcn.) |
| MIRO | Mineral Industry Research Organization (UK) |
| NEBOSH | National Examination Board In Occupational Safety And Health |