▪ I.deˈmissionary,a.1rare—0. [See demission1 and -ary.] ‘Tending to lower, depress, or degrade’ (Webster 1864). ▪ II.deˈmissionary,a.2rare—0. [See demission2 and -ary. Cf. F. démissionnaire.] Pertaining to the transfer or conveyance of an estate. 1864in Webster.