| Acronym | Meaning |
| IESWTR | Interim Enhanced Surface Water Treatment Rule |
| IAPSO | International Association For The Physical Sciences Of The Ocean (ICSU) |
| SCAB | South Coast Air Basin |
| CQZ | Constrained Quartet Zeta (basis Set) |
| IEEM | Ion-electron Emission Microscopy |
| LFCC | Laboratory-frame Close-coupling (for Electron-mol. Scattering) |
| SENSOR | Sentinel Event Notification Systems For Occupational Risks |
| IISRP | International Institute Of Synthetic Rubber Producers |
| EIM | Eddy Interaction Model |
| CRAM | Caisse Regionale D'Assurance Maladie |