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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

  1. rotary wing,
  2. rotary-till,
  3. rotate,
  4. rotating,
  5. rotation,
  6. rotation flap,
  7. rotation of axes,
  8. rotation vector,
  9. rotation-inversion axis,
  10. rotational
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