Term: liquid-crystalline polymer https://doi.org/10.1351/goldbook.LT07176 Definition: Polymeric material that, under suitable conditions of temperature, pressure, and concentration, exists as a liquid-crystalline mesophase. Note: A liquid-@C01432@ can exhibit one or more liquid state(s) with one- or two-dimensional, long-range orientational order over certain ranges of temperatures either in the melt (thermotropic liquid-@C01432@) or in solution (lyotropic liquid-@C01432@). Related Terms: 1) liquid crystal (http://doi.org/10.1351/goldbook.LT06856). 2) crystalline polymer (http://doi.org/10.1351/goldbook.C01432). 3) polymeric (http://doi.org/10.1351/goldbook.M03667). 4) mesophase (http://doi.org/10.1351/goldbook.M03849). Source: PAC, 2004, 76, 889. 'Definitions of terms relating to reactions of polymers and to functional polymeric materials (IUPAC Recommendations 2003)' on page 900 (https://doi.org/10.1351/pac200476040889) Citation: 'liquid-crystalline polymer' 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.LT07176 License: The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International (https://creativecommons.org/licenses/by-sa/4.0/) for individual terms. Disclaimer: The International Union of Pure and Applied Chemistry (IUPAC) is continuously reviewing and, where needed, updating terms in the Compendium of Chemical Terminology (the IUPAC Gold Book). Users of these terms are encouraged to include the version of a term with its use and to check regularly for updates to term definitions that you are using.