Orthorhombic crystal system

  In point groups. Orthorhombic lattices result from stretching a cubic lattice along two of its lattice vectors by two different factors, resulting in a rectangular prism with a rectangular base (a by b) and height (c), such that a ≠ b ≠ c. All three bases intersect at 90° angles. The three lattice vectors remain mutually orthogonal.