HyperDic is a hyper-dictionary based on WordNet 2.1. This version links 147,249 word forms.
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| NOUN | 1 | yolk sac, vitelline sac, umbilical vesicle, vesicula umbilicus | Membranous structure that functions as the circulatory system in mammal embryos until the heart becomes functional |
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| 2 | yolk sac | Membranous structure enclosing the yolk of eggs in birds reptiles marsupials and some fishes |
| Meaning | Membranous structure that functions as the circulatory system in mammal embryos until the heart becomes functional. |
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| Synonyms | vitelline sac, umbilical vesicle, vesicula umbilicus |
| Broader | sac |
| Meaning | Membranous structure enclosing the yolk of eggs in birds reptiles marsupials and some fishes. Circulates nutrients to the developing embryo. |
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| Broader | sac |
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