Definition: Triclinic crystal system is a type of cubic crystal structure, which means that all atoms are in one plane. It is often used to describe materials with two or more directions for directionality, such as glass and ceramics. In this context, "triclinic" refers to the triclinic crystal system, which is a type of cubic crystal structure where all atoms are in one plane. This means that each atom has an equal chance of being in any three planes at once