Title: amniochorionic membrane
Long Title: IUPAC Gold Book - amniochorionic membrane
DOI: 10.1351/goldbook.10367
Status: current

Definition
Composite membrane, formed by fusion of the amnion, interiorly, with the outer chorion that surrounds the developing fetus.

Related Terms
- amnion: https://goldbook.iupac.org/terms/view/10368
- chorion: https://goldbook.iupac.org/terms/view/10516
- fetus: https://goldbook.iupac.org/terms/view/10718
- membrane: https://goldbook.iupac.org/terms/view/11555

Source
- PAC, 2016, 88, 713. 'Glossary of terms used in developmental and reproductive toxicology (IUPAC Recommendations 2016)' on page 720 (https://doi.org/10.1515/pac-2015-1202)

Other Outputs
- html: https://goldbook.iupac.org/terms/view/10367/html
- json: https://goldbook.iupac.org/terms/view/10367/json
- xml: https://goldbook.iupac.org/terms/view/10367/xml

Citation: Citation: 'amniochorionic membrane' 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.10367
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: 2026-05-14T20:12:40+00:00