fastigium

The fastigium is a term used in several fields, most notably in medicine and architecture. In anatomy and medicine, the fastigium refers to the apex or highest point of a cavity. For example, in the brain, the fastigium is the uppermost point of the roof of the fourth ventricle, where the roof is formed by the cerebellum. This region is important as it is close to vital centers and can be affected by pressure changes within the ventricle.

Architecturally, the fastigium describes a structure that tapers to a point, often resembling a gable. This term can be applied to the triangular upper part of a facade, similar to a pediment but typically simpler in form. It can also refer to a narrow passage or a pointed archway. In some contexts, it might describe the pointed apex of a vault or a conical roof. The word itself derives from the Latin word "fastigium," meaning "a gable" or "a height." Regardless of the specific application, the core concept of a tapering, pointed, or highest point remains consistent across its various uses.