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7 Essential Words of Fall

ductus arteriosis

[duhk-tuh s ahr-teer-ee-oh-sis] /ˈdʌk təs ɑrˌtɪər iˈoʊ sɪs/
noun, Anatomy
1.
a fetal blood vessel that connects the left pulmonary artery directly to the descending aorta, normally closing after birth.
Origin
1805-1815
1805-15; < Neo-Latin: literally, arterial channel
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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