| HPD | hearing protective device; high-protein diet; home peritoneal dialysis |
|---|---|
| PA | panic attack; pantothenic acid; paralysis agitans; paranoia; passive aggressive; pathology; patient'... |
| PPGB | protective protein of beta-galactosidase |
| ROPS | rollover protective structure |
| TCPD50 | 50% tissue culture protective dose |