chorion.
The protective and nutritive membrane in higher vertebrates that attaches the fetus to the uterus.
Meaning & usage
The protective and nutritive membrane in higher vertebrates that attaches the fetus to the uterus.
The outer case of an insect egg.
The outer membrane of seeds of plants.
Where this word comes from
From Late Latin chorion, from Ancient Greek χόριον (khórion, “membrane surrounding the fetus, afterbirth”).
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.