(philosophy) the doctrine, as opposed to idealism and materialism, that reality consists of two basic types of substance usually taken to be mind and matter or two basic types of entity, mental and physical Compare monism
the theory that the universe has been ruled from its origins by two conflicting powers, one good and one evil, both existing as equally ultimate first causes
the theory that there are two personalities, one human and one divine, in Christ
In philosophy and theology, any system that explains phenomena by two opposing principles. Many philosophers hold to a dualism of mind and matter, or mind and body. For many theologians, the two principles are those of good and evil.