| NOUN | animal | chorioallantoic membrane, chorioallantois | the very vascular fetal membrane composed of the fused chorion and adjacent wall of the allantois |
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| Meaning | The very vascular fetal membrane composed of the fused chorion and adjacent wall of the allantois. | |
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| Synonym | chorioallantois | |
| Broader | membrane, tissue layer | A pliable sheet of tissue that covers or lines or connects the organs or cells of animals or plants |
| Spanish | alantocorion | |
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