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.
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Nearby words
rotary wing, rotary-till, rotate, rotating, rotation, rotation axis, rotation flap, rotation of axes, rotation vector, rotation-inversion axis, rotational molding
Compare symmetry element.
Origin of rotation axis
First recorded in 1900–05
Also called axis of symmetry, symmetry axis of rotation.
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019