| hydrophil | hydrophilic |
| hydrophob | hydrophobic |
| androphil | androphilous |
| Hydroxyl | hydroxyl |
| Hydroxid | hydroxide |
| xerophil | xerophilous |
| homophil | homophile |
| halophil | halophilic halophilous |
| pädophil | paedophile |
| Hydrochemie | hydrochemistry |
| Hydrochinon | hydroquinone |
| Hydrogen | hydrogen |
| Hydrographie | hydrography |
| Hydrologin | hydrologist |
| Hydrosphäre | hydrosphere |
| hydro- | hydro- |
| Hydraulik | hydraulics hydraulic system |
| Hydrid | hydride |
| Hydrochorie | hydrochory |
| Hydrologe | hydrologist |