| Acronym | Meaning |
| CSA | Coupled States Approxn. |
| TRFQ | Time-resolved Fluorescence Quenching |
| HNN | Hybrid Neural Network |
| AICD | Activation-induced Cell Death |
| LNT | Liquid Nitrogen Temperature |
| SME | Solar Mesosphere Explorer |
| NBACC | National Biodefense Analysis And Countermeasures Centerpa |
| EDL | Electroless Discharge Lamp |
| TWC | Three-Way Catalyst(s) |
| NHF(FC) | Nonrelativistic Numerical Hartree-Fock (frozen-core ) |