Term: isotropic carbon https://doi.org/10.1351/goldbook.I03354 Definition: A monolithic carbon material without preferred crystallographic orientation of the microstructure. Note: @I03353-1@ carbon can also be a @G02687@. The isotropy can be gross (bulk), macroscopic or microscopic, depending on the structural level at which isotropy is obtained. This word is widely used today and its meaning covers all the above levels. For example, the aerospace graphites have isotropy built in by random grain orientation. Some @N04233@ are @I03353-2@ at the crystalline (sub-grain) level. Related Terms: 1) isotropic (http://doi.org/10.1351/goldbook.I03353-1). 2) isotropic (http://doi.org/10.1351/goldbook.I03353-2). 3) graphite material (http://doi.org/10.1351/goldbook.G02687). 4) nuclear graphites (http://doi.org/10.1351/goldbook.N04233). 5) carbon material (http://doi.org/10.1351/goldbook.C00841). Source: PAC, 1995, 67, 473. 'Recommended terminology for the description of carbon as a solid (IUPAC Recommendations 1995)' on page 495 (https://doi.org/10.1351/pac199567030473) Citation: 'isotropic carbon' 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.I03354 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.