sinus venosus
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English
Alternative forms
- (pouch adjoining the heart): venous sinus
Etymology
Unadapted borrowing from New Latin sinus vēnōsus (“venous hollow”).
Pronunciation
- (Received Pronunciation) IPA(key): /ˌsʌɪ.nəs viːˈnəʊ.səs/
- (General American) IPA(key): /ˌsaɪ.nəs ˌviˈnoʊ.səs/
- Rhymes: -əʊsəs
Noun
sinus venosus (plural sinus venosi)
- (zootomy) The first chamber of the heart in fish, amphibians, and reptiles, emptying into the right atrium.
- (anatomy) 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.
Translations
References
- “sinus venosus”, in Merriam-Webster Online Dictionary, Springfield, Mass.: Merriam-Webster, 1996–present.