[du.al.ism] n (1794) 1: a theory that considers reality to consist of two irreducible elements or modes
2: the quality or state of being dual or of having a dual nature 3 a: a doctrine that the universe is under the dominion of two opposing principles one of which is good and the other evil b: a view of human beings as constituted of two irreducible elements (as matter and spirit) -- du.al.ist n -- du.al.is.tic adj -- du.al.is.ti.cal.ly adv