Learn how to say Metaphysics correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word metaphysics:
the branch of philosophy that deals with first principles and seeks to explain the nature of being or reality (ontology) and of the origin and structure of the universe ( cosmology): it is closely associated with the study of the nature of knowledge ( epistemology)
speculative philosophy in general
esoteric, often mystical or theosophical, lore
the theory or principles (of some branch of knowledge)
(popularly) any very subtle or difficult reasoning