truncus arteriosus


truncus ar·​te·​ri·​o·​sus -är-ˌtir-ē-ˈō-səs How to pronounce truncus arteriosus (audio)
: the part of the embryonic arterial system which develops into the ascending aorta and the pulmonary trunk

Dictionary Entries Near truncus arteriosus

Cite this Entry

“Truncus arteriosus.” Medical Dictionary, Merriam-Webster, Accessed 20 Mar. 2023.

Love words? Need even more definitions?

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

What Did You Just Call Me?

  • brown chihuahua sitting on the floor with squinting eyes looking at the camera
  • Before we went to her house, Hannah told us her aunt was a flibbertigibbet.
True or False

Test your knowledge - and maybe learn something along the way.

Solve today's spelling word game by finding as many words as you can with using just 7 letters. Longer words score more points.

Can you make 12 words with 7 letters?