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Duct   Listen
noun
Duct  n.  
1.
Any tube or canal by which a fluid or other substance is conducted or conveyed.
2.
(Anat.) One of the vessels of an animal body by which the products of glandular secretion are conveyed to their destination.
3.
(Bot.) A large, elongated cell, either round or prismatic, usually found associated with woody fiber. Note: Ducts are classified, according to the character of the surface of their walls, or their structure, as annular, spiral, scalariform, etc.
4.
Guidance; direction. (Obs.)






Collaborative International Dictionary of English 0.48








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"Duct" Quotes from Famous Books



... outside before the artery can be seen at all, and it is this that makes this operation very difficult and dangerous, especially on the left side, where the vein is close to the artery, and probably even crossing it from left to right. The thoracic duct is behind. ...
— A Manual of the Operations of Surgery - For the Use of Senior Students, House Surgeons, and Junior Practitioners • Joseph Bell

... encourage familiarity. Paralysis of the thoracic duct enables the patient to accept as many invitations to dinner as he can secure, without ...
— Cobwebs From an Empty Skull • Ambrose Bierce (AKA: Dod Grile)

... tinctures as ink, among them a brown color, sepia, in Hebrew tekeleth. As a natural ink its origin antedates every other ink, artificial or otherwise, in the world. It is a black-brown liquor, secreted by a small gland into an oval pouch, and through a connecting duct is ejected at will by the cuttle fish which inhabits the seas of Europe, especially the Mediterranean. These fish constantly employ the contents of their "ink bags" to discolor the water, when in the presence of enemies, ...
— Forty Centuries of Ink • David N. Carvalho

... under jaw exceeding the upper. the scales of this little fish are so small and thin that without minute inspection you would suppose they had none. they are filled with roes of a pure white colour and have scarcely any perceptable alimentary duct. I find them best when cooked in Indian stile, which is by roasting a number of them together on a wooden spit without any previous preperation whatever. they are so fat they require no additional sauce, and I think them superior ...
— The Journals of Lewis and Clark • Meriwether Lewis et al

... blood. If blood is too scant he must look to the motor systems of blood making, that would surely invite his most careful attention and study of the abdomen. He cannot expect blood to quietly pass through the diaphragm if impeded by muscular constriction around aorta, vena cava or thoracic duct. The diaphragm can and is often pulled down on both vena cava and thoracic duct, obstructing blood and chyle from returning to heart so much as to limit the chyle below the requirement of healthy blood, or even suppress the nerve action of lymphatics to such degree as to cause ...
— Philosophy of Osteopathy • Andrew T. Still

... prescription. Safura is thus a disease per se; it is common in Manyuema, and makes me in a measure content to wait for my medicines; from the description, inspissated bile seems to be the agent of blocking up the gall-duct and duodenum and the clay or earth may be nature trying to clear it away: the clay appears unchanged in the stools, and in large quantity. A Banyamwezi carrier, who bore an enormous load of copper, is now by safura scarcely able to walk; he took it at ...
— The Last Journals of David Livingstone, in Central Africa, from 1865 to His Death, Volume II (of 2), 1869-1873 • David Livingstone

... promptly dug out a little with her nail, and applied it to her nose. But with no effect. So digging out again a good quantity of it, she pressed it into her nostrils. Then suddenly she experienced a sensation in her nose as if some pungent matter had penetrated into the very duct leading into the head, and she sneezed five or six consecutive times, until tears rolled down from her eyes and mucus trickled from ...
— Hung Lou Meng, Book II • Cao Xueqin

... termination of bad cases. After producing gangrene and necrosis in the gums and alveoli, and after the discharge becomes, as above stated, acrimonious, a gangrenous spot is not unfrequently found about the opening of the Stenonian duct, on the inside of the upper or lower lip, opposite the incisors, in some other part of the inside of the lip or cheek, or in more than one of these situations at the same time. Whether this be owing to ...
— North American Medical and Surgical Journal, Vol. 2, No. 3, July, 1826 • Various

... calida. Warm salivation. Increased secretion of saliva. This may be effected either by stimulating the mouth of the gland by mercury taken internally; or by stimulating the excretory duct of the gland by pyrethrum, or tobacco; or simply by the movement of the muscles, which lie over the gland, as in masticating any tasteless substance, as a lock of wool, ...
— Zoonomia, Vol. II - Or, the Laws of Organic Life • Erasmus Darwin

... of the visitation suggested the Bishop, and thus opened a wide duct, which entirely diverted the stream of animadversion from that small pipe—that capillary vessel, the ...
— Scenes of Clerical Life • George Eliot

... by the name of short-circuiting; it enables the contents of the bowel to get beyond an obstruction. In this way also a permanent working communication can be set up between the gallbladder, or a dilated bile-duct, and the neighbouring small intestine—-the last-named operation bears the precise but very clumsy name of choledocoduodenostomy. By the use of Murphy's ingenious apparatus the communication of two parts can be secured in the shortest possible space ...
— Project Gutenberg Encyclopedia

... you must certainly take it, but above all, you must behave better. How can you expect thick syrup to pass through a thin little hair tube, especially when we squeeze the tube? It's impossible; and so it is with the biliary duct. It's simple enough. ...
— Redemption and Two Other Plays • Leo Tolstoy et al

... air-passages. The diphtheritic process may spread from the pharynx to the nasal cavities, causing blocking of the nares, with a profuse ichorous discharge from the nostrils, and sometimes severe epistaxis. The infection may spread along the nasal duct to the conjunctiva. The middle ear also may become involved by spread along the ...
— Manual of Surgery - Volume First: General Surgery. Sixth Edition. • Alexis Thomson and Alexander Miles

... duct, which finally pours them into one of the great veins not far from the heart. Tiny, branching lymphatic tubes are found all over the body, picking up what the cells leave of the fluid which has seeped out of the arteries for their use and returning it to the veins through the great lymph duct. ...
— A Handbook of Health • Woods Hutchinson

... these, the labrum-epipharynx, or labrum as we will call it, is the largest and is really a hollow tube very slightly open on its under side. Just below this is the hypopharynx, the lateral margins of which are very thin. Down through the median line of the hypopharynx runs a minute duct (Fig. 67, sal) which, though exceedingly small, is of very great importance, for through it is poured the saliva which may carry the malaria germs into the wound made when the mosquito bites. The ...
— Insects and Diseases - A Popular Account of the Way in Which Insects may Spread - or Cause some of our Common Diseases • Rennie W. Doane

... tons and require a giant truck and a sixteen-horse team to haul it to its resting-place. As many as twelve hundred wires are often bunched into one sheath, and each cable lies loosely in a little duct of its own. It is reached by manholes where it runs under the streets and in little switching-boxes placed at intervals it is frayed out into separate pairs of wires that blossom at length ...
— The History of the Telephone • Herbert N. Casson

... are little projections (villi), through which the food passes into a blood stream leading to the liver, where the blood is then purified. These projections also contain lacteals or little vessels containing blood without its red corpuscles. A duct carries this colourless blood mixed with absorbed food to the left side of the neck, where it empties into the blood stream. These lacteals have a special affinity for the fat of the food. Most of the rest of the food, including the proteid and the ...
— Papers on Health • John Kirk

... each testis are free, forming a dense cluster, each follicle being connected with the vas deferens by a short duct. The very young follicles are spherical, the older ones ovoid in form. The primary spermatogonia (plate XIV, fig. 237)—very clear cells with a lobed nucleus which stains slightly—occupy the tip of the follicle. ...
— Studies in Spermatogenesis - Part II • Nettie Maria Stevens

... morosely into the wiring duct, turned around to face me. He had that nasty grin on his ...
— Shock Absorber • E.G. von Wald



Words linked to "Duct" :   lymphatic vessel, ureter, duct tape, vertebral canal, gastrointestinal tract, tracheophyte, conduit, channel, inguinal canal, sinus venosus sclerae, spinal canal, canalis inguinalis, sweat duct, aqueductus cerebri, epithelial duct, air duct, digestive tract, ductus deferens, venous sinus, salivary duct, alimentary canal, lachrymal duct, common bile duct, laticifer, air passage, sinus, ductule, cervical canal, urethra, hepatic duct, nasolacrimal duct, epididymis, canal, cerebral aqueduct, plant structure, pore, seminal duct, lymph vessel, umbilical cord, passageway, canal of Schlemm, ejaculatory duct, duct gland, GI tract, lacrimal duct, thoracic duct, digestive tube, vascular plant, Sylvian aqueduct, air-intake, pancreatic duct, passage, lactiferous duct, ductulus, canaliculus, bronchiole, canalis vertebralis, vas deferens, canalis cervicis uteri, airway, cartilaginous tube, Schlemm's canal, umbilical, alimentary tract, Haversian canal, ampulla, plant part, tear duct, bile duct, vagina



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