| Abbreviation | Definition |
|---|---|
| SSHA | Society of Sexual Health Advisers |
| SSI | Scale for Suicidal Ideation |
| SSI | segmental sequential irradiation |
| SSI | severity score index |
| SSI | single strand initiation |
| SSI | Social Services Inspectorate |
| SSI | somatic symptom index |
| SSI | standard spending indicator |
| SSI | stuttering severity instrument |
| SSI | surgical site infection |
| SSI | symptom severity index |
| SSIP | strategic service implementation plan |
| SSIP | This term got 11 hits on 25.10.2011, and is best regarded as retired |
| SSIS | Social Services Information System |
| SSM | serum-supplemented medium |
| SSM | skin-sparing mastectomy |
| SSM | slipped strand mispairing |
| SSM | solid-supported membrane |
| SSM | special study module |
| SSM | system status management |