conus arteriosus

noun
co·​nus ar·​te·​ri·​o·​sus | \ ˈkō-nəs-är-ˌtir-ē-ˈō-səs How to pronounce conus arteriosus (audio) \
plural coni arteriosi\ ˈkō-​ˌnī-​är-​ˌtir-​ē-​ˈō-​ˌsī How to pronounce coni arteriosi (audio) \

Definition of conus arteriosus

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

First Known Use of conus arteriosus

circa 1860, in the meaning defined at sense 1

History and Etymology for conus arteriosus

New Latin, literally, arterial cone

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The first known use of conus arteriosus was circa 1860

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conus arteriosus

noun
co·​nus ar·​te·​ri·​o·​sus | \ ˈkō-nə-sär-ˌtir-ē-ˈō-səs How to pronounce conus arteriosus (audio) \
plural coni arteriosi\ -​ˌnī-​är-​ˌtir-​ē-​ˈō-​ˌsī, -​(ˌ)nē-​ How to pronounce coni arteriosi (audio) \

Medical Definition of conus arteriosus

: a conical prolongation of the right ventricle from which the pulmonary arteries emerge

called also conus

More from Merriam-Webster on conus arteriosus

Britannica.com: Encyclopedia article about conus arteriosus

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