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Sinus   Listen
noun
Sinus  n.  (pl. L. sinus, E. sinuses)  
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. 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. (Zool.) See under Pallial.
Sinus venosus. (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.






Collaborative International Dictionary of English 0.48








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"Sinus" Quotes from Famous Books



... Luceat; Iliacae longe nimbosa sororis Astra fugate, precor, totoque excludite caelo. Vos quoque caeruleum ponti, Nereides, agmen Quis honor ei regni cessit fortuna secundi, Dicere quae magni fas sit mihi sidera ponti, 15 Surgite de vitreis spumosae Doridos antris Baianosque sinus et feta tepentibus undis Litora tranquillo certatim ambite natatu, Quaerentes ubi celsa ratis, quam scandere gaudet Nobilis ...
— Helps to Latin Translation at Sight • Edmund Luce

... paper, A Study of the Relation of the Frontal Sinus to the Antrum, was read before the American Dental Association, at Saratoga, August 5, 1895. His investigation showed that the funnel-shaped passage known as the infundibulum extends from the ...
— Resonance in Singing and Speaking • Thomas Fillebrown

... superciliary ridge corresponding to the brow at the base of the forehead. It is formed by the projection of the external plate of the skull, leaving a separation or cavity between it and the inner plate, which cavity is called the frontal sinus, and is sometimes half an inch wide. As there is no positive method of determining its dimensions in the living head, there must ever be some doubt concerning the development of the perceptive organs which ...
— Buchanan's Journal of Man, July 1887 - Volume 1, Number 6 • Various

... larger of the two terminals of the digital, may be looked upon as a continuation of the main vessel. Running along the plantar groove, it gains the plantar foramen. Here it enters the interior of the bone (the semilunar sinus) and anastomoses with the corresponding artery of the opposite side. The circle of vessels so formed is called the Plantar Arch ...
— Diseases of the Horse's Foot • Harry Caulton Reeks

... described by M. Eudes-Deslongchamps as often characterizing the Normandy pigs. These appendages are always attached to the same spot, to the corners of the jaw; they are cylindrical, about three inches in length, covered with bristles, and with a pencil of bristles rising out of a sinus on one side: they have a cartilaginous centre, with two small longitudinal muscles; they occur either symmetrically on both sides of the face or on one {76} side alone. Richardson figures them on the gaunt old "Irish Greyhound pig;" and Nathusius states that they occasionally appear in ...
— The Variation of Animals and Plants Under Domestication, Vol. I. • Charles Darwin

... mentioned by any of the sacred writers before the captivity, in order to avoid ambiguity. The Gentile writers made use of it; and we see what mistakes have ensued. There were Phoenicians of various countries. They were to be found upon the Sinus [18]Persicus, upon the Sinus [19]Arabicus, in Egypt, in [20]Crete, in [21]Africa, in [22]Epirus, and even in Attica. [23][Greek: Phoinikes—genos ti Atheneisi]. There is a race of people called Phoenicians among the [24]Athenians. In short, it was a title introduced at Sidon, and the ...
— A New System; or, an Analysis of Antient Mythology. Volume II. (of VI.) • Jacob Bryant

... section of the tail of a human embryo, two-thirds of an inch long. (From Ross Granville Harrison.) Med medullary tube, Ca.fil caudal filament, ch chorda, ao caudal artery, V.c.i caudal vein, an anus, S.ug sinus urogenitalis.) ...
— The Evolution of Man, V.1. • Ernst Haeckel

... rubber syringe, with a good plunger (tried first to note whether or not any fluid works around between the barrel and the plunger), introduce one syringe full of the formaldehyd solution, then thoroughly probe the quittor to determine the number of sinuses. This done, inject each sinus. If two sinuses open on the surface, close one with cotton while filling the other so that if there is a connection the solution will come in contact with all tissues involved. Irrigate with the full pint of ...
— Lameness of the Horse - Veterinary Practitioners' Series, No. 1 • John Victor Lacroix

... of sycosis, scrofula, psora, syphilis; mercurianism, cinchonism, iodism and many other forms of chronic poisoning. Fevers, inflammations, skin eruptions, chronic sinus discharges, ulcers, abscesses, germs, bacteria, parasites, etc. Mechanical subluxations, distortions and displacements of bony structures, muscles and ligaments; weakening and loss of reason, will, and self-control resulting in negative, sensitive and ...
— Nature Cure • Henry Lindlahr

... been ascertained, and that is that, under such circumstances, the magnetic intensity of the needle may change without the indications ceasing to have the same exactness up to 65 degrees. As well known, Mr. Desains has demonstrated that this occurs likewise in sinus or tangent galvanometers; but these have helices that are very large in proportion to the needle. In medical galvanometers the proportions are no longer the same, and the needle is always very near the directing helix. If this latter is square, or even elliptical, it is found ...
— Scientific American Supplement, No. 497, July 11, 1885 • Various

... the cities of Pyrrha and Antissa, about Palus Meotis; and also the city Burys, in the Corinthian Gulf, commonly called Sinus Corinthiacus, have been swallowed up with the sea, and are not at this day to be discerned: by which accident America grew to be unknown, of long time, unto us of the later ages, and was lately discovered again by Americus Vespucius, in the year of our Lord ...
— Voyages in Search of the North-West Passage • Richard Hakluyt

... curves and angles by which finger-prints are grouped and classified, and the various points of resemblance by which two prints could be proved to have been made by the same finger. There was, first of all, the general convolution, whether a flexure, a stria, a sinus, a spiral, a circle, or a whorl; there was, secondly, the number of ridges in the convolution; and there was, thirdly, the angles which these ridges made. If two prints agreed in all these details, their identity was certain. He then proceeded to show that the prints made that morning by Swain ...
— The Gloved Hand • Burton E. Stevenson

... adjectives, and in other ways, Tacitus produces effects that we look for in poets, but not in historians, as he uses "bosom" or "lap" ("sinus"), in the metaphorical sense of a "hiding place", ("latebrae"), in the History (II. 92), and of "a retreat", ("recessus"), in the Agricola (30). So, instead of his "bosom," or "lap", for "hiding place," ...
— Tacitus and Bracciolini - The Annals Forged in the XVth Century • John Wilson Ross



Words linked to "Sinus" :   bodily cavity, sinus rectus, sinus transversus, fistula, epithelial duct, passage, cavernous sinus, sinus cavernosus, ethmoidal sinus, tentorial sinus, ethmoid sinus, straight sinus, frontal sinus, venous sinus, nasal sinus, sigmoid sinus, duct, sinus ethmoidales, sinus venosus sclerae



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