conus arteriosus

noun

co·​nus ar·​te·​ri·​o·​sus ˈkō-nəs-är-ˌtir-ē-ˈō-səs How to pronounce conus arteriosus (audio)
1
: a conical prolongation of the right ventricle in mammals from which the pulmonary arteries emerge

called also conus

2
: a prolongation of the ventricle of amphibians and some fishes that has a spiral valve separating venous blood going to the respiratory arteries from blood going to the aorta and systemic arteries

Word History

Etymology

New Latin, literally, arterial cone

First Known Use

circa 1860, in the meaning defined at sense 1

Time Traveler
The first known use of conus arteriosus was circa 1860

Dictionary Entries Near conus arteriosus

Cite this Entry

“Conus arteriosus.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/conus%20arteriosus. Accessed 1 Dec. 2024.

Medical Definition

conus arteriosus

noun
co·​nus ar·​te·​ri·​o·​sus ˈkō-nə-sär-ˌtir-ē-ˈō-səs How to pronounce conus arteriosus (audio)
: a conical prolongation of the right ventricle from which the pulmonary arteries emerge

called also conus

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