monism (n.)

a word used in philosophy and metaphysics of systems of thought which deduce all phenomena from a single principle (1832); also "the doctrine that only one being exists" (1862), from German Monism (by 1818) or directly from Modern Latin monismus, from Greek monos "alone" (from PIE root *men- (4) "small, isolated"); also see -ism. First used in German by German philosopher Baron Christian von Wolff (1679-1754), who applied it to those who deny the substantiality either of mind or matter. Fowler defines it as "any view of that makes the universe consist of mind with matter as a form of mind, or of matter with mind as a form of matter, or of a substance that in every part of it is neither mind nor matter but both," and writes that it is a contrast to dualism.