ductus arteriosus
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ductus arteriosus
[′dək·təs ‚är·tīr·ē′ō·səs] (embryology)
Blood shunt between the pulmonary artery and the aorta of the mammalian embryo.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.