| HDP | hexose diphosphate; high-density polyethylene; hydrogen diphosphonate; hydroxydimethylpyrimidine |
|---|---|
| HFDA | high film density area |
| IDL | Index to Dental Literature; interface definition language; intermediate density lipoprotein; interme... |
| IOD | injured on duty; integrated optical density; interorbital distance |
| LD | labor and delivery; laboratory data; labyrinthine defect; lactate dehydrogenase; laser Doppler; lear... |