Answer: It is the branch of philosophy that studies the ultimate structure and constitution of reality i.e., of that which is real. The word derives from the Greek words metá (meaning "beyond" or "after") and physiká (meaning "physical"), "physical" referring to those works on matter by Aristotle in antiquity. The term, which means literally "what comes after physics," was used to refer to the treatise by Aristotle on what he himself called "first philosophy
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