| Acronym | Meaning |
| IHF | Integration Host Factor |
| ABC | Avidin-biotin Complex |
| QSM | Quantum Shell Model |
| INDO/S | Intermediate Neglect Of Differential Overlap Screened Approxn. |
| AACC | American Association For Clinical Chemistry |
| RSMST | Real-space Multiple-scattering Theory (in Electronic Structure) |
| RCR | Recrystallization Controlled Rolling |
| SRT | Sludge Or Solids Retention Time |
| TFA | Total Fatty Acids |
| GLOSS | Global Sea Level Observing System (of IOC) |