ductus arteriosis

[ duhk-tuh s ahr-teer-ee-oh-sis ]
/ ˈdʌk təs ɑrˌtɪər iˈoʊ sɪs /

noun Anatomy.

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

Origin of ductus arteriosis

1805–15; < New Latin: literally, arterial channel
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019