| Doktortitel | doctor's degree doctoral level |
| Doktorvater | supervisor thesis advisor |
| Doktorat | doctorate |
| Doktorin | Doctor |
| doktorieren | doctor |
| doktrinal | doctrinal |
| Doktorfisch | surgeonfish |
| Vortitel | half title |
| Untertitel | subtitle caption subtitles |
| doktrinär | doctrinaire |
| Doktor | doctor physican |
| Doktorand | Ph.D. candidate Ph.D. student doctorand |
| Doktorandin | Ph.D. candidate Ph.D. student doctorand |
| Doktorarbeit | dissertation thesis |
| Doktorgrad | doctor's degree |
| Doktrin | doctrine |
| Suktorie | suctorian |
| auktorial | auctorial |
| vektoriell | vectorial |
| Hektoliter | hectolitre |