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.

Synonyms:

Look at other dictionaries:

  • sinus — 1. (si nus ) s. m. 1°   En géométrie, le sinus d un arc ou d un angle est la perpendiculaire abaissée d une extrémité de l arc sur le diamètre qui passe par l autre extrémité. •   Il est indubitable, et en cela Descartes mérite un coup d… …   Dictionnaire de la Langue Française d'Émile Littré

  • Sinus — may refer to:In anatomy, where a sinus is a sac or cavity in any organ or tissue: *Sinus (anatomy), description of the general term *Anal sinuses, the furrows which separate the columns in the rectum *Paranasal sinuses, air cavities in the… …   Wikipedia

  • SINUS — Veteribus quod inter brachia ad summum pectus intercipitur, dictum est i vide supra Gremium, unde et recessus littorum, in quos se mare insinuat, Sinus; et Sinum vestium vocavêre, quodcumque partem illam corporis regeret, Tunicae, Togae,… …   Hofmann J. Lexicon universale

  • Sinus — Sm (eine trigonometrische Funktion) per. Wortschatz fach. (19. Jh.) Entlehnung. Entlehnt aus l. sinus Krümmung ; dieses übersetzt arab. ǧaib, das aber in der mathematischen Bedeutung auf ein anderes Wort zurückgeht (ai. jīvā Bogensehne ).… …   Etymologisches Wörterbuch der deutschen sprache

  • 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 — 1590s, abscess, sore, from M.L. sinus, from L. sinus bend, fold, curve. Meaning hollow curve or cavity in the body is attested from 1670s. Sinusitis inflammation of a sinus is recorded from 1896 …   Etymology dictionary

  • Sinus — eines Winkels φ ist in einem rechtwinkligen Dreieck, das den Winkel φ besitzt, das Verhältnis der gegenüberliegenden Kathete zur Hypotenuse. Die Sinusfunktion ist die Umkehrung des Integrals Dieselbe hat die Periode 2π, und… …   Lexikon der gesamten Technik

  • sinus — sínus m DEFINICIJA 1. anat. a. polukružna koštana šupljina prevučena sluznicom [paranazalni sinusi; upala sinusa] b. izbočenja ili proširenja šupljih organa c. (mn) vezivni kanali smješteni između dva lista tvrde moždine 2. mat. trigonometrijska… …   Hrvatski jezični portal

  • sinus — m. anat. Seno. Medical Dictionary. 2011 …   Diccionario médico

  • sinus — has the plural form sinuses. In Latin the plural is sinus, not sini …   Modern English usage

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”