| HR | Heart Rate |
|---|---|
| HR | heart rate; hemorrhagic retinopathy; high resolution; higher rate; histamine receptor; hormonal response; hospital record; hospital report; hyperimmune reaction; hypophosphatemic rickets |
| hr | hairless [mouse]; host-range [mutant]; hour |
| HRA | health record analyst; health risk appraisal; heart rate audiometry; hereditary renal adysplasia; histamine release activity; Human Resources Administration |
| HRAE | high right atrium electrogram |
| HRBC | horse red blood cell |
| HRC | hereditary renal cancer; high-resolution chromatography; horse red cell; human rights committee |
| HRCT | High Resolution Computed Tomography = TSCT |
| HRCT, HR-CT | high-resolution computed tomography |
| HRE | hepatic reticuloendothelial [cell]; high-resolution electrocardiography; hormone receptor enzyme |