Of, relating to, or befitting (formerly) †a teacher or a person of eminent learning (obsolete) or someone who holds the degree of doctor. Also…

Having the qualities of a doctor, esp. (in later use) a medical doctor; resembling or reminiscent of a doctor; characteristic of or befitting a…

Of, relating to, or characteristic of a doctor; preparatory to or pursuing the award of a doctorate; = doctoral, adj.

= postdoctoral, adj.

Of, relating to, or designating research undertaken after obtaining a doctor's degree.

= postdoctoral, adj.