doc·tor·al 
/ˈdɑ:ktərəl/ adjective
always used before a noun /ˈdɑ:ktərəl/ adjective : of or relating to the highest degree that is given by a university
▪ a doctoral degree ▪ He wrote his doctoral dissertation/thesis on William Shakespeare. ▪ doctoral candidates [=students trying to earn their doctorates] — see also postdoctoral
▪ a doctoral degree ▪ He wrote his doctoral dissertation/thesis on William Shakespeare. ▪ doctoral candidates [=students trying to earn their doctorates] — see also postdoctoral
