Definition: It appears you are referring to the Greek term "katalitha" (which translates as "metaphysical", in addition to being a word for mathematics or its properties). It refers specifically to the state of not having knowledge, especially about something's true nature or essence. The precise definition of 'acatamathesia' within the broader context of philosophy might be that it is the state of lacking knowledge concerning something. The term typically comes from the Latin term "katamenathis" which means "knowing less than what one ought to know." It can also refer to a form of irrationality or disorder characterized by lack of understanding, as in 'metaphysical' or 'quintessence'. The word's use and interpretation can vary widely depending on the context, but its core meaning typically refers to lack of knowledge about something's true nature.