| Abbreviation | Definition |
|---|---|
| SIMS | Standardised Incident Management System |
| SIMS | Structured Inventory of Malingered Symptoms |
| SIMS | This term had 4 hits on 19.10.2011, and is thus likely retired |
| SING | Sexuality Issues Network Group |
| SING | This term had 29 hits on 25.10.2011, most of which on secondary sourceslists of abbreviations and acronyms, and thus is likely to have been retired from active use. |
| SING | This term had 29 hits on 25.10.2011, most of which on secondary sources–lists of abbreviations and acronyms, and thus is likely to have been retired from active use. |
| SIRI | safety information resources on the internet |
| SIRI | serious incident requiring investigation |
| SIRI | Suicide Intervention Response Inventory |
| SIRO | Senior Information Risk Owner |
| SIRT | selective internal radiation therapy |
| SIRT | service issues resolution team |
| SIRT | This term got 3 (!) hits on 10.11.2011, and two of those on lists of abbreviations. It is thus unlikely that it is in active use |
| SIS | selective identification system |
| SIS | Senior Intelligence Service |
| SIS | signal intelligence service |
| SIS | software intensive system |
| SIS | special information system |
| SIS | special intelligence support |
| SIS | statistical information system |