Pallial sinus
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. [1913 Webster]

2. A bay of the sea; a recess in the shore. [1913 Webster]

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. [1913 Webster]

4. (Med.) A narrow, elongated cavity, in which pus is collected; an elongated abscess with only a small orifice. [1913 Webster]

5. (Bot.) A depression between adjoining lobes. [1913 Webster]

Note: A sinus may be rounded, as in the leaf of the white oak, or acute, as in that of the red maple. [1913 Webster]

{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. [1913 Webster]


The Collaborative International Dictionary of English. 2000.

Look at other dictionaries:

  • Pallial sinus — Pallial Pal li*al, a. [L. pallium a mantle. See {Pall}.] (Zo[ o]l.) Of or pertaining to a mantle, especially to the mantle of mollusks; produced by the mantle; as, the pallial line, or impression, which marks the attachment of the mantle on the… …   The Collaborative International Dictionary of English

  • pallial sinus — 1. (BRACHIOPODA) see mantle canal. 2. (MOLLUSCA: Bivalvia) A notch or recess in the pallial line …   Dictionary of invertebrate zoology

  • pallial sinus — noun 1. : an often conspicuous inward bend in the posterior part of the pallial line of a bivalve mollusk 2. : any of the branching channels through which fluids circulate in the mantle of a brachiopod …   Useful english dictionary

  • 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. [1913 Webster] 2. A bay of the sea; a recess in the shore. [1913 Webster] 3 …   The Collaborative International Dictionary of English

  • 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. [1913 Webster] 2. A bay of the sea; a recess in the shore. [1913 Webster] 3 …   The Collaborative International Dictionary of English

  • 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. [1913 Webster] 2. A bay of the sea; a recess in the shore. [1913… …   The Collaborative International Dictionary of English

  • Pallial — Pal li*al, a. [L. pallium a mantle. See {Pall}.] (Zo[ o]l.) Of or pertaining to a mantle, especially to the mantle of mollusks; produced by the mantle; as, the pallial line, or impression, which marks the attachment of the mantle on the inner… …   The Collaborative International Dictionary of English

  • Pallial chamber — Pallial Pal li*al, a. [L. pallium a mantle. See {Pall}.] (Zo[ o]l.) Of or pertaining to a mantle, especially to the mantle of mollusks; produced by the mantle; as, the pallial line, or impression, which marks the attachment of the mantle on the… …   The Collaborative International Dictionary of English

  • Sinuses — 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. [1913 Webster] 2. A bay of the sea; a recess in the shore. [1913… …   The Collaborative International Dictionary of English

  • Grooved carpet shell — Taxobox name = Ruditapes decussatus regnum = Animalia phylum = Mollusca classis = Bivalvia ordo = Veneroida familia = Veneridae genus = Ruditapes species = R. decussatus binomial = Ruditapes decussatus binomial authority = L., 1758The grooved… …   Wikipedia

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