| ras | retrovirus-associated DNA sequence |
|---|---|
| RSIVP | rapid-sequence intravenous pyelography |
| SAS | sarcoma amplified sequence; self-rating anxiety scale; short arm splint; Sklar Aphasia Scale; sleep ... |
| SD | Sandhoff disease; senile dementia; septal defect; serologically defined; serologically detectable; s... |
| seq | sequence; sequel, sequela, sequelae; sequestrum |