Back نظام بلوري ثلاثي الميل Arabic Sistema triclínic Catalan Trojklonná soustava Czech Triklines Kristallsystem German Triklina kristalsistemo Esperanto Sistema cristalino triclínico Spanish Trikliinne süngoonia Estonian Kristal-sistema trikliniko Basque دستگاه بلوری سهشیب Persian Système cristallin triclinique French
In crystallography, the triclinic (or anorthic) crystal system is one of the seven crystal systems. A crystal system is described by three basis vectors. In the triclinic system, the crystal is described by vectors of unequal length, as in the orthorhombic system. In addition, the angles between these vectors must all be different and may not include 90°.
The triclinic lattice is the least symmetric of the 14 three-dimensional Bravais lattices. It has (itself) the minimum symmetry all lattices have: points of inversion at each lattice point and at 7 more points for each lattice point: at the midpoints of the edges and the faces, and at the center points. It is the only lattice type that itself has no mirror planes.