Title: cyanosis
Long Title: IUPAC Gold Book - cyanosis
DOI: 10.1351/goldbook.10579
Status: current

Definition
Bluish discoloration of the skin and mucous membranes due to excessive concentration of deoxygenated haemoglobin, owing to poor circulation or inadequate oxygenation of the blood.

Related Term
- mucous membranes: https://goldbook.iupac.org/terms/view/10978

Source
- PAC, 2016, 88, 713. 'Glossary of terms used in developmental and reproductive toxicology (IUPAC Recommendations 2016)' on page 741 (https://doi.org/10.1515/pac-2015-1202)

Other Outputs
- html: https://goldbook.iupac.org/terms/view/10579/html
- json: https://goldbook.iupac.org/terms/view/10579/json
- xml: https://goldbook.iupac.org/terms/view/10579/xml

Citation: Citation: 'cyanosis' 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.10579
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.
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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.
Accessed: 2026-05-15T04:57:23+00:00