| HRT | Half-relaxation time |
|---|---|
| HRT | Heidelberg Retina Tomograph |
| HRT | Hormonal Replacement Therapy |
| HRT | Hormone Replacement Therapy |
| HRT | Hydraulic Retention Time |
| HRT | hormone replacement treatment |
| HRTEM | High resolution transmission electron microscopy |
| HRTF | head-related transfer function |