Dualistic adj. Consisting of two; pertaining to dualism or duality.
Dualistic system or Dualistic theory (Chem.), an old theory, originated by Lavoisier and developed by Berzelius, that all definite compounds are binary in their nature, and consist of two distinct constituents, themselves simple or complex, and possessed of opposite chemical or electrical affinities; superseded by later developments in chemical bonding theory, especially quantum mechanics.
... term spiritualism, which I began by using merely as the opposite of materialism, thus subdivides into two species, the more intimate one of which is monistic and the less intimate dualistic. The dualistic species is the theism that reached its elaboration in the scholastic philosophy, while the monistic species is the pantheism spoken of sometimes simply as idealism, and sometimes as ... — A Pluralistic Universe - Hibbert Lectures at Manchester College on the - Present Situation in Philosophy • William James