| Doktorandin | Ph.D. candidate Ph.D. student doctorand |
| Doktorand | Ph.D. candidate Ph.D. student doctorand |
| Doktorin | Doctor |
| Doktorat | doctorate |
| doktorieren | doctor |
| Doktorarbeit | dissertation thesis |
| Doktrin | doctrine |
| Deklarantin | declarant |
| doktrinal | doctrinal |
| doktrinär | doctrinaire |
| Doktor | doctor physican |
| Doktorfisch | surgeonfish |
| Doktorgrad | doctor's degree |
| Doktortitel | doctor's degree doctoral level |
| Doktorvater | supervisor thesis advisor |
| Oktonion | octonion |
| Lektorin | lecturer |
| Rektorin | headmistress |
| Dekoratörin | decorator |
| Donatorin | giver |