Title: mesomorphic transition
Long Title: IUPAC Gold Book - mesomorphic transition
DOI: 10.1351/goldbook.M03847
Status: current

Definition
A transition that occurs between a fully-ordered crystalline solid and an isotropic liquid. Mesomorphic transitions can occur (i) from a crystal to a liquid crystal (ii) from a liquid crystal to another liquid crystal and (iii) from a liquid crystal to an isotropic liquid.

Related Terms
- isotropic: https://goldbook.iupac.org//terms/view/I03353
- liquid crystal: https://goldbook.iupac.org//terms/view/LT06856
- liquid-crystal transitions: https://goldbook.iupac.org//terms/view/L03579

Source
- PAC, 1994, 66, 577. 'Definitions of terms relating to phase transitions of the solid state (IUPAC Recommendations 1994)' on page 586 (https://doi.org/10.1351/pac199466030577)

Other Outputs
- html: https://goldbook.iupac.org/terms/view/M03847/html
- json: https://goldbook.iupac.org/terms/view/M03847/json
- xml: https://goldbook.iupac.org/terms/view/M03847/xml

Citation: Citation: 'mesomorphic transition' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. 10.1351/goldbook.M03847
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Accessed: 2026-05-12T08:40:05+00:00