| Acronym | Meaning |
| TOSS | Total Suppression Of Sidebands |
| SINDO | Scaled Intermediate Neglect Of Differential Overlap |
| RASSI | Restricted Active Space State Interaction |
| NRT | National Response Team |
| ERT | Estrogen Replacement Therapy |
| CPT | Critical Pitting Temperature |
| SCC | Semiclassical Coupled-channel |
| SASA | Solvent-accessible Surface Area |
| HBAR | High-overtone Bulk Acoustic Resonator |
| FIOR | Fluid Iron Ore Reduction |