the.com/metaphysics

means The branch of philosophy concerned with the fundamental nature of reality — existence, being, causation, time, and the relationship between mind and matter.

from Not a grand philosophical coinage at all, but an editorial accident. When ancient scholars organized Aristotle's writings, they shelved the untitled treatise on first causes and being right after his Physics — and called it ta meta ta physika, literally 'the things after the physics.' Later readers mistook the shelving note for a description of the subject matter itself, as if the word promised what lies 'beyond' the physical. That poetic misreading stuck, and a cataloguing label became the name of one of philosophy's deepest pursuits.