noun the philosophical study of being and knowing.
Examples
“Philosophers sometimes say that metaphysics is the study of the ultimate nature of the universe.”
“In Aristotelian metaphysics physical objects have both form and matter.”
“Even other universes should be a result of different physics. Without rules, these universes wouldn't exist, because they will have an undefined, thus impossible, nature. We will never understand or guess all possible forms of physics. That's why we have to understand the generic metaphysics.”