| OMS | organic mental syndrome; otomandibular syndrome |
|---|---|
| ONMRS | onychotrichodysplasia-neutropenia-mental retardation syndrome |
| PAMIE | physical and mental impairment of function evaluation |
| PMA | index of prevalence and severity of gingivitis, where P = papillary gingiva, M = marginal gingiva, a... |
| PNM | perinatal mortality; peripheral dysostosis, nasal hypoplasia, and mental retardation [syndrome]; per... |