| NMRDC | Naval Medical Research and Development Command |
|---|---|
| OCD | obsessive compulsive disorder; Office of Child Development; Office of Civil Defense; osteochondritis... |
| OHIPD | Office of Health Information Programs Development |
| OSRD | Office of Scientific Research and Development |
| PDI | pain disability index; periodontal disease index; plan-do integration; psychomotor development index... |