| HEHR | highest equivalent heart rate |
|---|---|
| HF | Hageman factor; haplotype frequency; hard filled [capsule]; hay fever; head of fetus; head forward; ... |
| Hfr | heart frequency; high frequency |
| HHD | high heparin dose; home dialysis; hypertensive heart disease |
| HHS | [Department of] Health and Human Services; Hearing Handicap Scale; hereditary hemolytic syndrome; hu... |