crystal system
class of space groups, lattices, point groups, or crystals
triclinic crystal system
lattice point group
trigonal crystal system
lattice point group
amorphous solid
solid, in which atoms and/or molecules are disordered like in a liquid
cubic crystal system
lattice point group
tetragonal crystal system
lattice point group
monoclinic crystal system
one of the 7 crystal systems in crystallography
orthorhombic crystal system
lattice point group
hexagonal crystal system
lattice point group