Britannica Sources used in this answer

How are the axes arranged in the orthorhombic crystal system?

Created from Britannica articles using AI. AI can make mistakes, so verify using Britannica articles.

In the orthorhombic crystal system, the three crystallographic axes are arranged such that they are all mutually perpendicular to one another, meaning they intersect at right angles.12

Unlike other systems with three perpendicular axes, the orthorhombic system is defined by the fact that all three axes—typically designated as a, b, and c—are of unequal lengths.12