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ductus arteriosis

American  
[duhk-tuhs 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.

Etymology

Origin of ductus arteriosis

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

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.