| Acronym | Meaning |
| HETP | Height Equivalent To A Theoretical Plate |
| GR | Glucocorticoid Receptorpar |
| SCI | Stabilized Criegee Intermediate(s) |
| NEIS | National Environmental Information Service |
| MAT | Magic Angle Turning |
| DELCD | Dry Electrolytic Conductivty Detector |
| RCS | Recoupled Centrifugal Sudden (approxn. |
| CWTM | Compound Weaire-Thorpe Model (in Electronic-structure Calcns.) |
| HCN | US Historical Climatology Network |
| FRTP | Fiber-reinforced Thermoplastic |