noun
metaphysics
met-uh-FIZ-iks/ˌmetəˈfɪzɪks/
The branch of philosophy that studies the fundamental nature of reality and existence.
Two philosophers discuss metaphysics while studying a sphere and its reflection.

Etymology
Here meta- meant “after”: these philosophical works followed Aristotle’s Physics in the collection. Their title was later read as “beyond the physical,” fitting inquiry into reality and being.
In context
it would seem that knowledge concerning the universe as a whole is not to be obtained by metaphysics
More examples
- In metaphysics, she asks whether the mind can exist without the body.
- Questions about cause and effect are central to metaphysics.
- His course in metaphysics explores what makes someone the same person over time.
Forms
metaphysics
metaphysical adjective — Relating to the fundamental nature of reality.
metaphysician noun — A philosopher who studies reality and existence.
Similar words
- ontology
- Focuses specifically on being and what kinds of things exist.
- philosophy
- Covers broader questions, including knowledge, ethics, and reasoning.