Definition of Venosus. Meaning of Venosus. Synonyms of Venosus
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Definition of Venosus
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Sinus venosus Sinus Si"nus, n.; pl. L. Sinus, E. Sinuses. [L., a bent
surface, a curve, the folds or bosom of a garment, etc., a
bay. Cf. Sine, n.]
1. An opening; a hollow; a bending.
2. A bay of the sea; a recess in the shore.
3. (Anat. & Zo["o]l.) A cavity; a depression. Specifically:
(a) A cavity in a bone or other part, either closed or
with a narrow opening.
(b) A dilated vessel or canal.
4. (Med.) A narrow, elongated cavity, in which pus is
collected; an elongated abscess with only a small orifice.
5. (Bot.) A depression between adjoining lobes.
Note: A sinus may be rounded, as in the leaf of the white
oak, or acute, as in that of the red maple.
Pallial sinus. (Zo["o]l.) See under Pallial.
Sinus venosus. [L., venous dilatation.] (Anat.)
(a) The main part of the cavity of the right auricle of
the heart in the higher vertebrates.
(b) In the lower vertebrates, a distinct chamber of the
heart formed by the union of the large systematic
veins and opening into the auricle.
