A three-dimensional geometric solid with six flat faces, most commonly a cube where all faces are equal squares.
From Greek 'hex-' (six) and 'hedra' (face). Used by Euclid and other ancient mathematicians; the term became standard in geometry by the Middle Ages.
Plato identified five perfect solids (Platonic solids), and the cube—a hexahedron—is the only one that can fill all of 3D space by itself, which is why salt crystals, dice, and buildings are all cube-shaped.
Complete word intelligence in one call. Free tier — 50 lookups/day.