Definify.com
Webster 1913 Edition
Sinus
Si′nus
,Noun.
pl. L.
Sinus
, E. Sinuses
(#)
. [L., a bent surface, a curve, the folds or bosom of a garment, etc., a bay. Cf. ]
Sine
, Noun.
1.
An opening; a hollow; a bending.
2.
A bay of the sea; a recess in the shore.
3.
(Anat. & Zool.)
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.
☞ A sinus may be rounded, as in the leaf of the white oak, or acute, as in that of the red maple.
Pallial sinus
. (Zool.)
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.
Webster 1828 Edition
Sinus
SI'NUS
,Noun.
1.
A bay of the sea; a recess in the shore , or an opening in the land.2.
In anatomy, a cavity in a bone or other part, wider at the bottom than at the entrance.3.
In surgery, a little cavity or sack in which pus is collected; an abscess with only a small orifice.4.
An opening; a hollow.Definition 2024
sinüs
sinüs
Turkish
Noun
sinüs (definite accusative sinüsü, plural sinüsler)
- (trigonometry) sine (abbreviated form: sin)
Declension
declension of sinüs