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Từ điển WordNet v3.1 - WordNet Dictionary
ductus arteriosus
a blood vessel in a fetus that bypasses pulmonary circulation by connecting the pulmonary artery directly to the ascending aorta;
normally closes at birth
• Hypernyms:
blood vessel
• Hyponyms:
patent ductus arteriosus
• Part Holonyms:
fetus, foetus
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