| Acronym | Meaning |
| HECD | Hot Electron Capture Dissociation |
| RFEC | Remote Field Eddy Current |
| SID | Selected Ion Detection |
| QIOS | Quantum Infinite-order Sudden (method For Collisions) |
| SAPRC | Statewide Air Pollution Research Center |
| CTM | Conditional Test Method |
| PIPES | Piperazine-1 |
| MSP | Macrophage Stimulating Protein |
| ADRF | Adiabatic Demagnetization In The Rotating Frame |
| SPMN | Soil Potentially Mineralizable Nitrogen |