| HDP | hexose diphosphate; high-density polyethylene; hydrogen diphosphonate; hydroxydimethylpyrimidine |
|---|---|
| HDR | high dose rate |
| HDU | hemodialysis unit; high dependency unit |
| HE | half-scan with extrapolation; hard exudate; hektoen enteric [agar]; hemagglutinating encephalomyelit... |
| HEI | Health Effects Institute; high-energy intermediate; homogenous enzyme immunoassay; human embryonic i... |