| SSD | shaded surface display; single saturating dose; Social Security disability; source-skin distance; so... |
|---|---|
| SSDI | Social Security Disability Income; Supplemental Security Disability Income |
| SSI | segmental sequential irradiation; shoulder subluxation inhibition; small-scale integration; Social S... |
| SSQ | Social Support Questionnaire |
| VSMS | Vineland Social Maturity Scale |