triclinic system.    From Wordnet, Princeton University. 

In the sixth and last system, the triclinic -- or anorthic, or asymmetric -- the axes are again three, but in this case, none of them are equal and none at right angles.    From Wordnik.com.  [The Chemistry, Properties and Tests of Precious Stones] Reference

· Fixed Wyckoff database for non-conventional complex lattices of triclinic space groups.    From Wordnik.com.  [Softpedia - Windows - All] Reference

Beginning with the highest, we have -- (1) the cubic system, with nine planes of symmetry; (2) the hexagonal, with seven planes; (3) the tetragonal, with five planes; (4) the rhombic, with three planes; (5) the monoclinic, with one plane; (6) the triclinic, with no plane of symmetry at all.    From Wordnik.com.  [The Chemistry, Properties and Tests of Precious Stones] Reference