Term: crystallinity
https://doi.org/10.1351/goldbook.C01433

Definition:
The presence of three-dimensional order on the level of atomic dimensions. Crystallinity may be detected by diffraction techniques, heat-of-fusion measurements, etc. The amount of disorder within the crystalline region is not incompatible with this concept.

Related Terms:
1) diffraction (http://doi.org/10.1351/goldbook.D01711).

Source: Purple Book, 1st ed., p. 74 (http://old.iupac.org/publications/books/author/metanomski.html)

Citation: 'crystallinity' 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.C01433

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