| Abbreviation | Definition |
|---|---|
| SSP | Screening Serrvice Programme |
| SSP | Specialist Screening Practitioner |
| SSP | stingent starvation protein |
| SSP | sustained spike potentials |
| SSR | secondary sex ratio |
| SSR | service strategy and regulation |
| SSR | signal sequence receptor |
| SSR | single-strand region |
| SSR | site-specific recombination |
| SSR | sphincter-saving resection |
| SSRADU | Social Services Research and Development Unit |
| SSRG | Social Services Research Group |
| SSSI | Site of Special Scientific Interest (!) |
| ST | seizure threshold |
| ST | seminiferous tubule |
| ST | semitendinosus |
| ST | sensory threshold |
| ST | Shiga toxin |
| ST | signal transduction |
| ST | sinus tachycardia |