n. [ OE. tretis, OF. treitis, traitis, well made. See Treat. ]
He published a treatise in which he maintained that a marriage between a member of the Church of England and a dissenter was a nullity. Macaulay. [ 1913 Webster ]
☞ A treatise implies more form and method than an essay, but may fall short of the fullness and completeness of a systematic exposition. [ 1913 Webster ]
n. One who writes a treatise. [ Obs. ] [ 1913 Webster ]