The Scutoid: A geometric building block of life

A Voronoi cell is then defined by the set of points around any given seed which is closer in distance to that seed than to any other, and a Voronoi diagram shows all of the Voronoi cells for a given choice of seeds. Upon the enlargement of the surface, regions around the seed points change because you could think of “more” surface being injected into the intervening regions around points, as a result of the curvature (see below left: notice how the blue and yellow cells only touch on the inner cylinder). As the Voronoi cells transition around a given generating point from the inner surface to the outer, the geometric shape of a scutoid is drawn out between the two layers!

Source: chalkdustmagazine.com