| Hydrotherapie | hydrotherapy |
| Hypnotherapie | hypnotherapy |
| Physiotherapie | physiotherapy physical therapy |
| Radiotherapie | radiotherapy |
| Hydrochemie | hydrochemistry |
| Hydroenergie | hydropower |
| Hydrographie | hydrography |
| Hydrochorie | hydrochory |
| Ergotherapie | occupational therapy |
| Autotherapie | autotherapy |
| Chemotherapie | chemotherapy |
| Hypothermie | hypothermia |
| Logotherapie | logotherapy |
| Psychotherapie | psychotherapy |
| Madentherapie | maggot therapy |
| Hydrogenase | hydrogenase |
| Hydroxygruppe | hydroxy hydroxyl group |
| Ampelotherapie | ampelotherapy |
| Gentherapie | gene therapy |
| Hyperthermie | hyperthermia |