06210 IUPAC Gold Book - symbol 10.1351/goldbook.S06210 S06210 current 1 Conventional sign designating a quantity or a unit of measurement. Symbols for quantities are denoted by letters of the Latin or Greek alphabet printed in italic (sloping) type; \(\rm{pH}\) is an exception. Symbols for units are denoted by letters of the Latin or Greek alphabet printed in roman (upright) type. PAC, 1996, 68, 957. 'Glossary of terms in quantities and units in Clinical Chemistry (IUPAC-IFCC Recommendations 1996)' on page 995 (https://doi.org/10.1351/pac199668040957) https://goldbook.iupac.org/terms/view/S06210/html https://goldbook.iupac.org/terms/view/S06210/json https://goldbook.iupac.org/terms/view/S06210/plain Citation: 'symbol' 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.S06210 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. If you are interested in licensing the Gold Book for commercial use, please contact the IUPAC Executive Director at executivedirector@iupac.org . 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. 2026-04-27T16:01:57+00:00