| Acronym | Meaning |
| (PI)SDCI | (pi)-electron Singly And Doubly Excited CI |
| SNR | Signal-to-noise Ratio |
| ENR | Endogenous Nitrate Respiration |
| PSCI | Partitioned (orbital Hessian) Super-configuration Interaction |
| CGF | Coulomb Green Function |
| LMF | Ladle Metallurgical Facility |
| GW-PG | Gaussian-weighted Planar Grid (method In Calcns. Of Electron-momentum Distributions) |
| GRID | Global Resources Information Database |
| MPE | Mean Percent Error |
| PRA | Probabilistic Risk Assessment |