English Explanatory Dictionary

sinus venosus

English dictionary entry

Meanings

noun
  1. The first chamber of the heart in fish, amphibians, and reptiles, emptying into the right atrium.
  2. 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.

Pronunciation

/ˌsʌɪ.nəs viːˈnəʊ.səs/ /ˌsaɪ.nəs ˌviˈnoʊ.səs/

Word forms

sinus venosus sinus venosi venous sinus

Etymology

Unadapted borrowing from New Latin sinus vēnōsus (“venous hollow”).

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