rotation axis
noun Crystallography.
an imaginary line through a crystal about which the crystal may be rotated a specified number of degrees and be brought back to its original position.
Also called
axis of symmetry,
symmetry axis of rotation.
Compare
symmetry element.
Origin of rotation axis
First recorded in 1900–05
Words nearby rotation axis
rotary wing,
rotary-till,
rotate,
rotating,
rotation,
rotation axis,
rotation flap,
rotation of axes,
rotation vector,
rotation-inversion axis,
rotational molding