Metaphysics deals with existence, identity, space, time, and causes or meaning that are not measurable physically or scientifically.
Examples are human experience, abstract thought or subjects, existence, belief and opinion.
Metaphysics and science are both subsets of philosophy.
While science deals with specific situations, metaphysics deals with general matters, e.g. While a scientist studies “evidence”, a metaphysicist may study what are the characteristics that qualify as evidence.
With quantum physics showing increasingly metaphysical evidence, (such as matter which has the characteristics of energy) the delineation between the science and metaphysics is becoming more diffuse.
See also: Scientific Metaphysics, E=MC2Full Glossary Index