| PNM | perinatal mortality; peripheral dysostosis, nasal hypoplasia, and mental retardation [syndrome]; per... |
|---|---|
| retard | retardation, retarded |
| SCARF | skeletal abnormalities, cutis laxa, craniostenosis, psychomotor retardation, facial abnormalities [s... |
| SMR | senior medical resident; sensorimotor rhythm; severe mental retardation; sexual maturity rating; ske... |
| SPERM | spastic paraplegia-epilepsy-mental retardation [syndrome] |