| GDB | gas density balance; guide dogs for the blind |
|---|---|
| HCTD | hepatic computed tomography density |
| HD | Haab-Dimmer [syndrome]; Hajna-Damon [broth]; Hansen disease; hearing distance; heart disease; helix ... |
| HDL | high-density lipoprotein |
| HDLBP | high-density lipoprotein binding protein |