| OEIS | omphalocele, exstrophy, imperforate anus, spinal defects [complex] |
|---|---|
| PDC | parkinsonism dementia complex; pediatric cardiology; penta-decylcatechol; phosducin; physical depend... |
| PDG | parkinsonism-dementia complex of Guam; phosphogluconate dehydrogenase |
| PDHC | pyruvate dehydrogenase complex |
| P-R | the time between the P wave and the beginning of the QRS complex in electrocardiography [interval] |