Euclidian n. Related to Euclid, or to the geometry of Euclid.
Euclidian space (Geom.), the kind of space to which the axioms and definitions of Euclid, relative to straight lines and parallel lines, apply; called also flat space, and homaloidal space.
... Community Club House at Camp Sherman stretch the cantonments—a Euclidian nightmare of bare boards, black roofs and ditches, making grim vistas of straight lines. This is the architecture of Need in contradistinction to the architecture of Greed, symbolized in the shop-window prettiness of those sanitary suburbs of our cities created by the real estate agent and the ... — Architecture and Democracy • Claude Fayette Bragdon