DictionarymetaphysicsStudy of reality
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.

Two contemporary philosophers consider a solid wooden sphere and its reflection in a small mirror, using the contrast between an object and its appearance as a concrete starting point for discussion of reality and existence.
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

Enhanced Public Domain221:13
it would seem that knowledge concerning the universe as a whole is not to be obtained by metaphysics
1910s Philosophy: Bertrand Russell - The Problems of Philosophy (Audiobook)

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.