| SIF | serum-inhibition factor |
|---|---|
| SSI | segmental sequential irradiation; shoulder subluxation inhibition; small-scale integration; Social S... |
| STIC | Science and Technology Information Center; serum trypsin inhibition capacity; solid-state transducer... |
| TI | inversion time; temporal integration; terminal ileum; thalassemia intermedia; therapeutic index; tho... |
| TMIF | tumor-cell migratory inhibition factor |