| Dramentheorie | dramatic theory |
| Graphentheorie | graph theory |
| Mengentheorie | set theory |
| Knotentheorie | knot theory |
| Gruppentheorie | group theory |
| Quantentheorie | quantum theory |
| Wellentheorie | wave model wave theory |
| Zahlentheorie | theory of numbers |
| Dysenterie | dysentery |
| Präsentatorin | presenter |
| Chaostheorie | chaos theory |
| M-Theorie | M-theory |
| Spieltheorie | game theory |
| Sprachtheorie | linguistic theory theory of language |
| Staatstheorie | theory of the state |
| Systemtheorie | system theory |
| Trajektorie | trajectory |
| Dramatikerin | dramatist |
| Dramaturgie | dramaturgy dramatic composition drama department |
| Drapetomanie | drapetomania |