■ plural noun [usu. treated as sing. ]
1》 the branch of philosophy concerned with the first principles of things, including abstract concepts such as being and knowing.
2》 informal abstract theory.
Derivatives
metaphysician noun
Origin
C16: representing med. L. metaphysica (neut. plural), based on Gk ta meta ta phusika 'the things after the Physics', referring to the sequence of Aristotle's works.