👉 Quiddity is a fictional term in Harry Potter and related works of J.K. Rowling, which refers to the magical properties that are not directly visible or measurable but can be sensed by those with special abilities. These include invisibility, telekinesis, levitation, and other magical powers. The term "quiddity" was first introduced in the novel "Harry Potter and the Philosopher's Stone," where it is used to describe certain magical properties that are not immediately apparent or easily measurable
