Adjective
Having six sides and six angles; six-sided.
Source: Webster's dictionaryThe universe (which others call the Library) is composed of an indefinite and perhaps infinite number of hexagonal galleries, with vast air shafts between, surrounded by very low railings. Jorge Luis Borges
A hexagonal piece of cheese is a lot better than a square piece of cheese. Hod Lipson
Above is a hexagonal louvre, dating to 1703. Source: Internet
Amorphous ice is more common; however, hexagonal crystalline ice can be formed by volcanic action. citation Log-lin pressure-temperature phase diagram of water. Source: Internet
As the design effort continued, it evolved into the current design with a single continuous hexagonal core to the SkyPod, with three support legs blended into the hexagon below the main level, forming a large Y-shape structure at the ground level. Source: Internet
At the centre of the macula is the foveal pit where the cones are smallest and in a hexagonal mosaic, the most efficient and highest density. Source: Internet