| 释义 |
duct
duct D0413900 (dŭkt)n.1. An often enclosed passage or channel for conveying a substance, especially a liquid or gas.2. Anatomy A tubular bodily canal or passage, especially one for carrying a glandular secretion: a tear duct.3. A tube or pipe for enclosing electrical cables or wires.tr.v. duct·ed, duct·ing, ducts 1. To channel through a duct: duct the moist air away.2. To supply with ducts.
[Latin ductus, act of leading, from past participle of dūcere, to lead; see deuk- in Indo-European roots.]
duct′al adj.duct′less adj.duct (dʌkt) n1. a tube, pipe, or canal by means of which a substance, esp a fluid or gas, is conveyed2. (Anatomy) any bodily passage, esp one conveying secretions or excretions3. (Botany) a narrow tubular cavity in plants, often containing resin or some other substance4. (Electrical Engineering) Also called: conduit a channel or pipe carrying electric cable or wires5. (Building) a passage through which air can flow, as in air conditioning6. (Printing, Lithography & Bookbinding) the ink reservoir in a printing press[C17: from Latin ductus a leading (in Medieval Latin: aqueduct), from dūcere to lead] ˈductless adjduct (dʌkt)
n. 1. any tube, canal, pipe, or conduit by which a liquid, air, or other substance is conducted or conveyed. 2. a tube conveying bodily secretions or excretions. 3. a conducting tube or tubule in plant tissues. 4. a single enclosed runway for electrical conductors or cables. [1640–50; < Latin ductus conveyance (of water), hence channel (in Medieval Latin) <duc-, variant s. of dūcere to lead, draw] duct (dŭkt) A tube or tube-like structure through which something flows, especially a tube in the body for carrying a fluid secreted by a gland.Thesaurus| Noun | 1. |  duct - a bodily passage or tube lined with epithelial cells and conveying a secretion or other substance; "the tear duct was obstructed"; "the alimentary canal"; "poison is released through a channel in the snake's fangs"epithelial duct, canal, channelpore - any small opening in the skin or outer surface of an animalpassageway, passage - a path or channel or duct through or along which something may pass; "the nasal passages"canalis vertebralis, spinal canal, vertebral canal - the canal in successive vertebrae through which the spinal cord passesductule, ductulus - a very small ductcanaliculus - a small canal or duct as in some bones and parts of plantscanal of Schlemm, Schlemm's canal, sinus venosus sclerae - a circular canal in the eye that drains aqueous humor from the anterior chamber of the eye into the anterior ciliary veinsvenous sinus, sinus - a wide channel containing blood; does not have the coating of an ordinary blood vesselampulla - the dilated portion of a canal or duct especially of the semicircular canals of the earlachrymal duct, lacrimal duct, tear duct - any of several small ducts that carry tears from the lacrimal glandsnasolacrimal duct - a duct that carries tears from the lacrimal sac to the nasal cavityHaversian canal - any of the many tiny canals that contain blood vessels and connective tissue and that form a network in bonehepatic duct - the duct that drains bile from the livercanalis inguinalis, inguinal canal - oblique passage through the lower abdominal wall; in males it is the passage through which the testes descend into the scrotum and it contains the spermatic cord; in females it transmits the round ligament of the uterusbile duct, common bile duct - a duct formed by the hepatic and cystic ducts; opens into the duodenumpancreatic duct - a duct connecting the pancreas with the intestinelymph vessel, lymphatic vessel - a vascular duct that carries lymph which is eventually added to the venous blood circulationsalivary duct - a duct through which saliva passes from the salivary gland into the mouthaqueductus cerebri, cerebral aqueduct, Sylvian aqueduct - a canal connecting the third and fourth ventriclesureter - either of a pair of thick-walled tubes that carry urine from the kidney to the urinary bladderurethra - duct through which urine is discharged in most mammals and which serves as the male genital ductcanalis cervicis uteri, cervical canal - a spindle-shaped canal extending from the uterus to the vaginaumbilical, umbilical cord - membranous duct connecting the fetus with the placentavagina - the lower part of the female reproductive tract; a moist canal in female mammals extending from the labia minora to the uterus; "the vagina receives the penis during coitus"; "the vagina is elastic enough to allow the passage of a fetus"epididymis - a convoluted tubule in each testis; carries sperm to vas deferensductus deferens, vas deferens - a duct that carries spermatozoa from the epididymis to the ejaculatory ductseminal duct - the efferent duct of the testis in manejaculatory duct - a part of the seminal duct formed by the duct from the seminal vesicle and the vas deferens; passes through the prostate glandcartilaginous tube - a duct with cartilaginous wallsbronchiole - any of the smallest bronchial ducts; ending in alveolialimentary canal, alimentary tract, digestive tract, digestive tube, gastrointestinal tract, GI tract - tubular passage of mucous membrane and muscle extending about 8.3 meters from mouth to anus; functions in digestion and eliminationlactiferous duct - ducts of the mammary gland that carry milk to the nipple | | 2. | duct - a continuous tube formed by a row of elongated cells lacking intervening end wallstracheophyte, vascular plant - green plant having a vascular system: ferns, gymnosperms, angiospermsplant part, plant structure - any part of a plant or funguslaticifer - a plant duct containing latex | | 3. | duct - an enclosed conduit for a fluidair-intake - a duct that admits air to be mixed with fuelair duct, air passage, airway - a duct that provides ventilation (as in mines)conduit - a passage (a pipe or tunnel) through which water or electric wires can pass; "the computers were connected through a system of conduits" |
ductnoun pipe, channel, passage, tube, canal, funnel, conduit a big air duct in the ceilingTranslationsduct (dakt) noun a tube or pipe for fluids etc. a ventilation duct. (輸送流體的)管子 （输送流体的）管 duct
duct1. any bodily passage, esp one conveying secretions or excretions 2. a narrow tubular cavity in plants, often containing resin or some other substance 3. a channel or pipe carrying electric cable or wires DuctA nonmetallic or metallic tube for housing wires or cables, may be underground or embedded in concrete floor slabs; a duct usually fabricated of metal, used to transfer air from one location to another.duct[dəkt] (anatomy) An enclosed tubular channel for conducting a glandular secretion or other body fluid. (communications) An enclosed runway for cables. (geophysics) The space between two air layers, or between an air layer and the earth's surface, in which microwave beams are trapped in ducting. Also known as radio duct; tropospheric duct. (mechanical engineering) A fluid flow passage which may range from a few inches in diameter to many feet in rectangular cross section, usually constructed of galvanized steel, aluminum, or copper, through which air flows in a ventilation system or to a compressor, supercharger, or other equipment at speeds ranging to thousands of feet per minute. duct1. ,See air duct.2. In electric systems, a metallic or nonmetallic tube, (usually circular, oval, rectangular, or octagonal) for housing wires or cables; may be underground or embedded in concrete floor slabs.ductA thin-wall tube installed in aircraft air-conditioning and heating systems to carry heated or cooled air for distribution to various aircraft locations.duct
duct [dukt] a passage with well-defined walls, especially a tubular structure for the passage of excretions or secretions. adj., adj ductal.accessory duct of Santorini a tubular structure that drains the lower part of the head of the pancreas.alveolar d's small passages connecting the respiratory bronchioles and the alveolar sacs.Bartholin's duct (duct of Bartholin) the larger and longer of the sublingual ducts.bile d's (biliary d's) see bile ducts.cochlear duct a spiral membranous tube in the bony canal of the cochlea between Reissner's membrane and the basilar membrane; it is divided into the scala tympani, scala vestibuli, and spiral lamina. Called also scala media.common bile duct a duct formed by the union of the cystic and hepatic ducts; see also bile ducts.cystic duct the passage connecting the gallbladder neck and the common bile duct.efferent duct any duct that gives outlet to a glandular secretion.ejaculatory duct the duct formed by union of the ductus deferens and the duct of the seminal vesicles, opening into the prostatic urethra on the colliculus seminalis.endolymphatic duct a canal connecting the membranous labyrinth of the ear with the endolymphatic sac.excretory duct one through which the secretion is conveyed from a gland.hepatic duct the excretory duct of the liver, or one of its branches in the lobes of the liver; see also bile ducts. Hepatic duct. From Applegate, 2000.lacrimal duct the excretory duct of the lacrimal gland; see also lacrimal apparatus. Called also lacrimal canaliculus.lacrimonasal duct nasal duct.lactiferous d's ducts conveying the milk secreted by the lobes of the breast to and through the nipples.lymphatic duct, left thoracic duct.lymphatic d's see lymphatic ducts.mammary duct lactiferous ducts.mesonephric duct an embryonic duct of the mesonephros, which in the male becomes the epididymis, ductus deferens and its ampulla, seminal vesicles, and ejaculatory duct, and in the female is largely obliterated.müllerian duct either of the two paired embryonic ducts developing into the vagina, uterus, and fallopian tubes, and becoming largely obliterated in the male.nasal duct (nasolacrimal duct) the downward continuation of the lacrimal sac, opening on the lateral wall of the inferior meatus of the nose; see also lacrimal apparatus.pancreatic duct the main excretory duct of the pancreas, which usually unites with the common bile duct before entering the duodenum at the major duodenal papilla; see also bile ducts.papillary d's straight excretory or collecting portions of the renal tubules, which descend through the renal medulla to a renal papilla.paramesonephric duct müllerian duct.paraurethral d's Skene's glands.parotid duct the duct by which the parotid glands" >parotid glands empty into the mouth.prostatic d's minute ducts from the prostate, opening into or near the prostatic sinuses on the posterior wall of the urethra.lymphatic duct, right a vessel draining lymph from the upper right side of the body, receiving lymph from the right subclavian, jugular, and mediastinal trunks when those vessels do not open independently into the right brachiocephalic vein.salivary d's the ducts of the salivary glands.semicircular d's the long ducts of the membranous labyrinth of the ear.seminal d's the passages for conveyance of spermatozoa and semen.sublingual d's the excretory ducts of the sublingual salivary glands.submandibular duct (submaxillary duct) the duct that drains the submandibular gland and opens at the sublingual caruncle.tear duct lacrimal duct.thoracic duct a duct beginning in the cisterna chyli and emptying into the venous system at the junction of the left subclavian and left internal jugular veins. It acts as a channel for the collection of lymph from the portions of the body below the diaphragm and from the left side of the body above the diaphragm.duct (dŭkt), [TA] A tubular structure giving exit to the secretion of a gland or organ, capable of conducting fluid.
See also: canal. Synonym(s): ductus [TA] [L. duco, pp. ductus, to lead] duct (dŭkt)n.1. An often enclosed passage or channel for conveying a substance, especially a liquid or gas.2. Anatomy A tubular bodily canal or passage, especially one for carrying a glandular secretion: a tear duct.
duct′al adj.duct′less adj.duct (dŭkt) [TA] A tubular structure giving exit to the secretion of a gland, or conducting any fluid.
See also: canal
Synonym(s): ductus [TA] . [L. duco, pp. ductus, to lead]duct (dukt) [L. ductus, conveyance (for water)] 1. A narrow tubular vessel or channel, esp. one that conveys secretions from a gland. 2. A narrow enclosed channel containing a fluid, e.g., the semicircular duct of the ear. accessory pancreatic ductA duct of the pancreas leading into the pancreatic duct or the duodenum near the mouth of the common bile duct. Synonym: duct of Santorinialimentary ductAn obsolete term for the thoracic duct. alveolar ductA branch of a respiratory bronchiole that leads directly to the alveolar sacs of the lungs. See: alveolus for illusBartholin duct See: Bartholin, Caspar (the younger) BILE DUCTSbile ductAny of the intercellular passages that convey bile from the liver to the hepatic duct, which joins the duct from the gallbladder (cystic duct) to form the common bile duct (ductus choledochus), and which enters the duodenum about 3 in (7.6 cm) below the pylorus. Synonym: biliary duct See: illustrationbiliary ductBile duct.Botallo ductDuctus arteriosus.cochlear ductCochlear spiral canal.common bile ductThe duct that carries bile and pancreatic juice to the duodenum. It is formed by the union of the cystic duct of the gallbladder and the hepatic duct of the liver and is joined by the main pancreatic duct. Synonym: ductus choledochus See: biliary tract for illuscystic ductThe secretory duct of the gallbladder. It unites with the hepatic duct from the liver to form the common bile duct. See: biliary tract for illus efferent ductAny of a group of 12 to 14 small tubes that constitute the efferent ducts of the testis. They lie within the epididymis and connect the rete testis with the ductus epididymidis. Their coiled portions constitute the lobuli epididymidis. ejaculatory ductThe duct that conveys sperm from the vas deferens and secretions from the seminal vesicle to the urethra. endolymphatic ductIn the embryo, a tubular projection of the otocyst ending in a blind extremity, the endolymphatic sac. In the adult, it connects the endolymphatic sac with the utricle and saccule of the inner ear. duct of the epoophoronGartner's duct.excretory ductAny duct that conveys a waste product from an organ, such as the collecting duct of the renal tubule.Gartner duct See: Gartner, Hermannhepatic ductEither of the ducts that receive bile from the right or left lobe of the liver and carries it to the common bile duct. Synonym: ductus hepaticus dexter; ductus hepaticus sinisterintercalated ductAny of several short, narrow ducts that lie between the secretory ducts and the terminal alveoli in the parotid and submandibular glands and in the pancreas.interlobular ductA duct passing between lobules within a gland, e.g., one of the ducts carrying bile.lacrimal ductAny of the small excretory ducts of the lacrimal glands.lactiferous ductAny of 15 to 20 ducts that drain the lobes of the mammary gland. Each opens in a slight depression in the tip of the nipple. Synonym: milk duct DRAINAGE AREAS FOR LYMPHATIC DUCTSlymphatic ductEither of two main ducts conveying lymph to the bloodstream: the left lymphatic (thoracic) and the right lymphatic duct, which drains lymph from the right side of the body above the diaphragm. It discharges into the right subclavian vein. It is smaller than the left lymphatic duct. See: thoracic duct; illustrationmesonephric ductWolffian duct.milk ductLactiferous duct.müllerian ductEither of the bilateral embryonic tubes in the embryo from which the oviducts, uterus, and vagina develop in the female; in the male, they atrophy. Synonym: Müller ductnasolacrimal ductA membranous tube that runs in the nasolacrimal canal and drains tears from the lacrimal sac to the nasal cavity. It opens beneath the inferior nasal concha. omphalomesenteric ductYolk stalk.pancreatic ductThe duct that conveys pancreatic juice to the common bile duct and duodenum. Synonym: duct of Wirsungpapillary ductAny of the large ducts formed by the uniting of the collecting tubules of the kidney; it empties into the renal pelvis. papillary duct of Bellini See: Bellini, Lorenzoparamesonephric ductThe genital canal in the embryo. In females it develops into the oviducts, uterus, and vagina; in males it degenerates to form the appendix testis. paraurethral ductSkene duct.parotid ductStensen duct.prostatic ductOne of about 20 ducts that discharge prostatic secretion into the urethra. Synonym: duct prostaticusduct of Rivinus See: Rivinus, Augustsalivary ductAny of the ducts that drain a salivary gland. duct of SantoriniAccessory pancreatic duct.secretory ductAny of the smaller canals of a gland. segmental ductOne of a pair of embryonic tubes located between the visceral and parietal layers of the mesoblast on each side of the body.semicircular ductOne of three membranous tubes forming a part of the vestibular labyrinth of the inner ear. They lie within the semicircular canals and bear corresponding names: anterior, posterior, and lateral. The semicircular ducts originate from the utricle as a single common tube (crus communale). The three ducts then branch, and each follows the course of a different bony semicircular canal. At their far ends the ducts widen into an ampulla that contains a specialized endothelium that is sensitive to motion of the endolymph. Axons from receptor cells in these sensory epithelia transmit motion information to the brain via the vestibular division of the vestibulococchlear nerve (CN VIII). See: labyrinth for illus. seminal ductAny of the ducts that convey sperm, specifically the ductus deferens and the ejaculatory duct.Skene duct See: Skene, Alexanderspermatic ductThe secretory duct of the testicle that later joins the duct of the seminal vesicle to become the ejaculatory duct. Synonym: ductus deferens; vas deferens; testicular ductStensen duct See: Stensen, Nielsstriated ductAny of a class of ducts within the lobules of glands, esp. salivary glands, that contain radially appearing striations within the cells, denoting the presence of mitochondria. sublingual ductAny of the secretory ducts of the sublingual gland. See: Bartholin ducttear ductA duct that conveys tears. These include secretory ducts of lacrimal glands, and lacrimal and nasolacrimal ducts. testicular ductSpermatic duct.thoracic ductThe main lymphatic duct, originating at the cisterna chyli. It passes upward through the diaphragm into the thorax and continues upward along the aorta and esophagus to the neck, where it turns to the left and enters the left subclavian vein near its junction with the left internal jugular vein. It receives lymph from all parts of the body except the right side of the head, neck, thorax, and upper extremity. See: lymphatic system for illus thyroglossal ductIn the embryo, a duct that connects the thyroid diverticulum with the tongue. It eventually disappears, its point of origin being indicated as a pit, the foramen cecum. It sometimes persists as an anomaly. umbilical ductYolk stalk.utriculosaccular ductA narrow tube emanating from the utricle, connecting it to the saccule, and opening into the endolymphatic duct of the inner ear.vitelline ductYolk stalk.wolffian ductIn the embryo, the duct leading from the mesonephros to the cloaca. From it develop the ductus epididymis, ductus deferens, seminal vesicle, ejaculatory duct, ureter, and pelvis of the kidney. Synonym: mesonephric ductduct A tube or passage, especially one leading from a gland, through which a fluid or semisolid substance is conveyed.duct a tube for conveying fluids such as secretions of lymph in the body. In plants a duct may be formed from a row of elongated cells that have lost their interconnecting end walls, and carry water or air.DuctA tube through which various substances can pass. These substances can travel through ducts to another organ or into the bloodstream.Mentioned in: Cholecystitisduct (dŭkt) [TA] Tubular structure giving exit to secretion of a gland or organ.
See also: canal
Synonym(s): ductus. [L. duco, pp. ductus, to lead]Patient discussion about ductQ. what are the risks of surgical removal of the cyst in acase of 5 years old girl with Thyroglossal Duct Cyst? A. every surgery procedure has some risks, but while doing a Sistrunk (that procedure) the Doctor weigh the pro's and con's.
the possible complications for that procedure are:
* Excessive bleeding.
* Surgical-wound infection.
* Inadvertent injury to larynx (rare).
which are not so harsh... all of them manageable (if they actually do happen- not very common), and the operating Dr. took them in consideration.
i know it's scary buy don't worry :) More discussions about ductFinancialSeeconduitduct
Related to duct: Duct tape walletSynonyms for ductnoun pipeSynonyms- pipe
- channel
- passage
- tube
- canal
- funnel
- conduit
Synonyms for ductnoun a bodily passage or tube lined with epithelial cells and conveying a secretion or other substanceSynonyms- epithelial duct
- canal
- channel
Related Words- pore
- passageway
- passage
- canalis vertebralis
- spinal canal
- vertebral canal
- ductule
- ductulus
- canaliculus
- canal of Schlemm
- Schlemm's canal
- sinus venosus sclerae
- venous sinus
- sinus
- ampulla
- lachrymal duct
- lacrimal duct
- tear duct
- nasolacrimal duct
- Haversian canal
- hepatic duct
- canalis inguinalis
- inguinal canal
- bile duct
- common bile duct
- pancreatic duct
- lymph vessel
- lymphatic vessel
- salivary duct
- aqueductus cerebri
- cerebral aqueduct
- Sylvian aqueduct
- ureter
- urethra
- canalis cervicis uteri
- cervical canal
- umbilical
- umbilical cord
- vagina
- epididymis
- ductus deferens
- vas deferens
- seminal duct
- ejaculatory duct
- cartilaginous tube
- bronchiole
- alimentary canal
- alimentary tract
- digestive tract
- digestive tube
- gastrointestinal tract
- GI tract
- lactiferous duct
noun a continuous tube formed by a row of elongated cells lacking intervening end wallsRelated Words- tracheophyte
- vascular plant
- plant part
- plant structure
- laticifer
noun an enclosed conduit for a fluidRelated Words- air-intake
- air duct
- air passage
- airway
- conduit
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