rhombohedral lattice

rhombohedral lattice

[¦räm·bō¦hē·drəl ¦lad·əs]
(crystallography)
A crystal lattice in which the three axes of a unit cell are of equal length, and the three angles between axes are the same, and are not right angles. Also known as trigonal lattice.
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3] rhombohedral lattice is at an angle of about 30[degrees] to the normal direction of the wall.