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ductus arteriosis

[ duhk-tuhs ahr-teer-ee-oh-sis ]

noun

, Anatomy.
  1. a fetal blood vessel that connects the left pulmonary artery directly to the descending aorta, normally closing after birth.


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Word History and Origins

Origin of ductus arteriosis1

1805–15; < New Latin: literally, arterial channel

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