| hydroponisch | hydroponic hydroponically soilless |
| hydraulisch | hydraulic |
| hydrostatisch | hydrostatic |
| hypersonisch | hypersonic |
| drakonisch | draconian |
| harmonisch | harmonious |
| hedonisch | hedonic |
| herodotisch | Herodotean |
| hypodorisch | hypodorian |
| Hydrocortison | hydrocortisone |
| Hydrogenase | hydrogenase |
| Hydrologin | hydrologist |
| hydroelektrisch | hydroelectric |
| Hydrogenium | hydrogen |
| Hydrokortison | hydrocortisone |
| Hydrologie | hydrology |
| hydrophil | hydrophilic |
| ektropisch | ectropic |
| eutrophisch | eutrophic |
| strophisch | strophic |