aortic arch

noun

Definition of aortic arch

1 : one of the arterial branches in vertebrate embryos that exist in a series of pairs with one on each side of the embryo, connect the ventral arterial system lying anterior to the heart to the dorsal arterial system above the digestive tract, and persist in adult fishes but are reduced or much modified in the adult of higher forms

Examples of aortic arch in a Sentence

Recent Examples on the Web But because Caleb had a rare defect known as an interrupted aortic arch, oxygenated blood flow to his body was being choked off as the duct began to seal itself. Pam Kragen, San Diego Union-Tribune, "10-year reunion celebrates boy’s survival and how he changed hospital rules statewide," 22 Sep. 2020 The team suspects that the animal’s stretchy aortic arch, part of the main artery entering the heart, continues to slowly contract between heartbeats, maintaining blood flow to the animal’s body. Jason Daley, Smithsonian, "Researchers Measure a Wild Blue Whale’s Heart Rate for the First Time," 19 Nov. 2019 In 2012, a 76-year-old Connecticut doctor had surgery to repair a life-threatening bulge in his aortic arch—the hulking bend that hooks the massive artery around the heart, routing oxygenated blood both upward and downward. Beth Mole, Ars Technica, "Virus fished from pond cures man’s deadly antibiotic-resistant infection," 20 Mar. 2018 The study is based off the case of a 76-year-old man who underwent surgery for his aortic arch, a part of the main artery around the heart. Josh Magness, miamiherald, "Virus found in a pond offers hope for when antibiotics aren’t working, study finds | Miami Herald," 21 Mar. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'aortic arch.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

See More

First Known Use of aortic arch

1802, in the meaning defined at sense 1

Keep scrolling for more

Learn More about aortic arch

Time Traveler for aortic arch

Time Traveler

The first known use of aortic arch was in 1802

See more words from the same year

Statistics for aortic arch

Last Updated

25 Sep 2020

Cite this Entry

“Aortic arch.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/aortic%20arch. Accessed 27 Sep. 2020.

Keep scrolling for more

More Definitions for aortic arch

aortic arch

noun

Medical Definition of aortic arch

1 : one of the arterial branches in vertebrate embryos that exist in a series of pairs with one on each side of the embryo, that connect the ventral arterial system lying anterior to the heart to the dorsal arterial system above the digestive tract, and that persist in adult fishes but are reduced or much modified in the adult of higher forms

More from Merriam-Webster on aortic arch

Britannica.com: Encyclopedia article about aortic arch

Comments on aortic arch

What made you want to look up aortic arch? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

Test Your Vocabulary

Challenging Vocabulary Quiz Returns!

  • stylized drawing of woman pole vaulting across gap to get trophy
  • Which is a synonym of fuliginous?
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
Bee Cubed

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!