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screw axis

American  

noun

Crystallography.

  1. a symmetry element of a space group such that a rotation of the lattice about the axis and a translation of the lattice some fraction of the lattice's unit distance brings the lattice back to its original position.

Etymology

Origin of screw axis

First recorded in 1900–05

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.