Why this word is great
PYRAMIDION — [Noun] The small, pyramidal capstone that completes an obelisk or crowns the apex of a pyramid. From New Latin pyramidion, a diminutive of Latin pyramis, pyramidis (“pyramid”), from Greek πυραμίς, πυραμίδ- (pyramís, pyramíd-), with the Greek diminutive suffix -ίον (-ion). Unlike a “capstone”—a blunt, generic term for any finishing block—or an “obelisk,” which names the entire monolithic shaft, the pyramidion is the specific, sharp conclusion: the final, geometric thought. It is the gilded tip that first catches the sun, the precise angle that casts the last long shadow at dusk, and the solitary apex where all four faces of ambition converge. The monument’s entire design is thus refined into a single, perfect point—a reminder that even the grandest endeavors must eventually taper to an end.