Wiktionary
concentricities
n. (plural of concentricity English)
Usage examples of "concentricities".
Below it stretched a plain of rooftops, skybridges, and aerial thoroughfares that had conspired to create a mosaic of sumptuous geometries--colossal spirals and concentricities, crosses and triangles, quilts and diamonds--great mandalas aimed at the stars, or perhaps the temporal complements of the constellations to be found there.