| HDP | hexose diphosphate; high-density polyethylene; hydrogen diphosphonate; hydroxydimethylpyrimidine |
|---|---|
| HF | Hageman factor; haplotype frequency; hard filled [capsule]; hay fever; head of fetus; head forward; ... |
| HVSD | hydrogen-detected ventricular septal defect |
| HX | histiocytosis X; hydrogen exchange; hypophysectomized |
| LHM | lysuride hydrogen maleate |