Modifies a noun

• crystal: The unit cell of a body-centred orthorhombic crystal is shown.

• cell: An orthorhombic unit cell is shown opposite in both its real and reciprocal space representations.

• structure: Regarding the crystal symmetry, prehnite has an orthorhombic crystal structure with an mm2 point group.

• phosphorus: The crystal structure of orthorhombic black phosphorus is shown below.

• symmetry: A dimer in a monoclinic space group with non-crystallographic symmetry that closely approximates orthorhombic crystallographic symmetry might exhibit this behavior.