geometrical equivalence 

in polymers
https://doi.org/10.1351/goldbook.G02618
The symmetry correspondence among units belonging to the same chain. The symmetry elements always bear a special relationship to the chain axis.
See also: line repetition groups
Source:
Purple Book, 1st ed., p. 77 [Terms] [Book]
Citation: 'geometrical equivalence' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. https://doi.org/10.1351/goldbook.G02618 RIS BibTex EndNote
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Last revised: February 24, 2014