dissertator

enUK

dis·ser·tate

D0288100 (dĭs′ər-tāt′) also dis·sert (dĭ-sûrt′)intr.v. dis·ser·tat·ed, dis·ser·tat·ing, dis·ser·tates also dis·sert·ed or dis·sert·ing or dis·serts 1. To discourse formally.2. To prepare a dissertation.
[Latin dissertāre, dissertāt-, frequentative of disserere, to discuss : dis-, dis- + serere, to connect; see ser- in Indo-European roots.]
dis′ser·ta′tor n.