| Acronym | Meaning |
| HART | Highway Addressable Remote Transducer [Rosemount |
| ECM | Embedded Cluster Method (in Electronic-structure Calcns.) |
| REM | Reservoir Eutrophication Model |
| RME | Reasonably Maximally Exposed |
| ACC | 1-aminocyclopropane-1-carboxylic Acid |
| RTT | Resonant Tunneling Transistor |
| ELI | Extra Low Interstitial |
| MSC | Multiplicative Scatter Correction |
| RSD | Relative Standard Deviation |
| SIFS | Solvent-induced Frequency Shifts |