| Äquivalenzrelation | equivalence relation |
| Äquivalenzklasse | equivalence class |
| Äquivalenzpunkt | equivalence point |
| Äquivalent | equivalent |
| äquivalent | equivalent |
| Äquivalentkonzentration | normality |
| Äquivalenz | equivalence |
| Valenzelektron | valence electron |
| Quindezillion | novemvigintillion |
| Public Relations | public relations |
| Unschärferelation | Heisenberg uncertainty principle |
| Type-Token-Relation | type-token-ratio |
| Hypoventilation | hypoventilation |
| Triangulation | triangulation |
| Ventilation | ventilation |
| Gruppenoperation | group action |
| Univerbation | univerbation |
| Abalienation | abalienation |
| Alimentation | alimentation |
| Alliteration | alliteration |