The term "triclinic" refers to one of the seven crystal systems in crystallography. In a triclinic crystal system, the unit cell is defined by three unequal axes that are not perpendicular to each other. This results in a structure that lacks symmetry, making it the least symmetrical of all crystal systems. Common examples of minerals that crystallize in the triclinic system include feldspar and turquoise. The unique arrangement of atoms in triclinic crystals can lead to distinct physical properties, such as varying hardness and cleavage patterns, which are important for identifying and classifying minerals.