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sinus 音标拼音: [s'ɑɪnəs] n. 窦,静脉窦,湾,下陷或凹下去的地方 窦,静脉窦,湾,下陷或凹下去的地方 sinus n 1: an abnormal passage leading from a suppurating cavity to the body surface [synonym: {fistula}, {sinus}] 2: any of various air-filled cavities especially in the bones of the skull 3: a wide channel containing blood; does not have the coating of an ordinary blood vessel [synonym: {venous sinus}, {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. & 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. [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}. (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. [1913 Webster] 48 Moby Thesaurus words for "sinus":
alveolation, alveolus, antrum, arc, armpit, basin, bow, bowl, catacaustic, catenary, caustic, cavity, circle, concave, concavity, conchoid, crater, crook, crypt, cup, curl, curve, depression, diacaustic, dip, ellipse, festoon, fold, follicle, funnel chest, hole, hollow, hollow shell, hook, hyperbola, lacuna, lituus, parabola, pit, pocket, punch bowl, scoop, shell, sink, socket, tracery, trough, vug
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