sinus venosus

noun

si·​nus ve·​no·​sus ˈsī-nəs-vi-ˈnō-səs How to pronounce sinus venosus (audio)
: an enlarged pouch that adjoins the heart, is formed by the union of the large systemic veins, and is the passage through which venous blood enters the heart in lower vertebrates and in embryos of higher forms

Word History

Etymology

New Latin, venous sinus

First Known Use

circa 1839, in the meaning defined above

Time Traveler
The first known use of sinus venosus was circa 1839

Dictionary Entries Near sinus venosus

Cite this Entry

“Sinus venosus.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/sinus%20venosus. Accessed 24 Apr. 2024.

Medical Definition

sinus venosus

noun
si·​nus ve·​no·​sus ˌsī-nəs-vi-ˈnō-səs How to pronounce sinus venosus (audio)
: an enlarged pouch that adjoins the heart, is formed by the union of the large systemic veins, and is the passage through which venous blood enters the heart in lower vertebrates and in embryos of higher forms

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