| retard | retardation, retarded |
|---|---|
| SMR | senior medical resident; sensorimotor rhythm; severe mental retardation; sexual maturity rating; ske... |
| SPERM | spastic paraplegia-epilepsy-mental retardation [syndrome] |
| WAGR | Wilms tumor, aniridia, genitourinary abnormalities, and mental retardation |
| XLMR | X-linked mental retardation |