Why this word is great
PERISCIAN — [Adjective] Of or relating to inhabitants within the polar circles, whose shadows, cast by the low, circuitous summer sun, move entirely around them over the course of a day. From Ancient Greek περί (perí, "around") + σκιά (skiá, "shadow"), via New Latin Periscii and the English suffix -an. Unlike "amphiscian" (which describes tropical shadows that flit north then south) or "heteroscian" (which denotes temperate shadows fixed to a single, reliable quarter), periscian names the polar realm where orientation dissolves. It is the sundial rendered meaningless, the long silhouette of a solitary figure tracing a perfect circle on the midnight snow, and the profound, celestial disorientation of watching your own dark twin orbit you without end—a quiet testament to standing at the very axis of a turning earth, where the self becomes the center of a clockless world.