What is a metaphysics?

Metaphysics is the philosophical study of being and knowing OR Metaphysics is the branch of philosophy investigating principles of reality transcending those of any particular science OR Metaphysics is one of the principal works of Aristotle and the first major work of the branch of philosophy with the same name. The principal subject is "being qua being", or being understood as being. ... OR The branch of philosophy which studies fundamental principles intended to describe or explain all that is, and which are not themselves explained ... OR * metaphysical - pertaining to or of the nature of metaphysics; "metaphysical philosophy" * metaphysical - without material form or substance; "metaphysical forces" * metaphysical - highly abstract and overly theoretical; "metaphysical reasoning"