dark matter: (cosmology) a hypothetical form of matter that is believed to make up 90 percent of the universe; it is invisible (does not absorb or emit light) and does not collide with atomic particles but exerts gravitational force
arminianism: 17th century theology (named after its founder Jacobus Arminius) that opposes the absolute predestinarianism of John Calvin and holds that human free will is compatible with God's sovereignty