| Hypogamie | hypogamy |
| Hypergamie | hypergamy |
| Hyponymie | hyponymy |
| Hypotaxis | hypotaxis |
| Hypoglykämie | hypoglycemia hypoglycaemia |
| Hypoplasie | hypoplasia |
| Hypotaxe | hypotaxis |
| Hypotonie | hypotension hypotonia hypotonicity |
| Hypovolämie | hypovolæmi |
| Hypoxie | hypoxia hypoxaemia oxygen deficiency oxygen depletion |
| Typografie | typography |
| Autogamie | autogamy |
| Endogamie | endogamy |
| Exogamie | exogamy |
| Isogamie | isogamy |
| Monogamie | monogamy |
| Xenogamie | xenogamy |
| Hyperonymie | hypernymy |
| Hypokauste | hypocaust |
| Hyperopie | hyperopia |