| duct | | |
| n. (body) | 1. canal, channel, duct, epithelial 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" |
| ~ pore | any small opening in the skin or outer surface of an animal. |
| ~ passageway, 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 passes. |
| ~ ductule, ductulus | a very small duct. |
| ~ canaliculus | a small canal or duct as in some bones and parts of plants. |
| ~ canal 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 veins. |
| ~ venous sinus, sinus | a wide channel containing blood; does not have the coating of an ordinary blood vessel. |
| ~ ampulla | the dilated portion of a canal or duct especially of the semicircular canals of the ear. |
| ~ lachrymal duct, lacrimal duct, tear duct | any of several small ducts that carry tears from the lacrimal glands. |
| ~ nasolacrimal duct | a duct that carries tears from the lacrimal sac to the nasal cavity. |
| ~ haversian canal | any of the many tiny canals that contain blood vessels and connective tissue and that form a network in bone. |
| ~ hepatic duct | the duct that drains bile from the liver. |
| ~ canalis 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 uterus. |
| ~ bile duct, common bile duct | a duct formed by the hepatic and cystic ducts; opens into the duodenum. |
| ~ pancreatic duct | a duct connecting the pancreas with the intestine. |
| ~ lymph vessel, lymphatic vessel | a vascular duct that carries lymph which is eventually added to the venous blood circulation. |
| ~ salivary duct | a duct through which saliva passes from the salivary gland into the mouth. |
| ~ aqueductus cerebri, cerebral aqueduct, sylvian aqueduct | a canal connecting the third and fourth ventricles. |
| ~ ureter | either of a pair of thick-walled tubes that carry urine from the kidney to the urinary bladder. |
| ~ urethra | duct through which urine is discharged in most mammals and which serves as the male genital duct. |
| ~ canalis cervicis uteri, cervical canal | a spindle-shaped canal extending from the uterus to the vagina. |
| ~ umbilical, umbilical cord | membranous duct connecting the fetus with the placenta. |
| ~ vagina | 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 deferens. |
| ~ ductus deferens, vas deferens | a duct that carries spermatozoa from the epididymis to the ejaculatory duct. |
| ~ seminal duct | the efferent duct of the testis in man. |
| ~ ejaculatory duct | a part of the seminal duct formed by the duct from the seminal vesicle and the vas deferens; passes through the prostate gland. |
| ~ cartilaginous tube | a duct with cartilaginous walls. |
| ~ bronchiole | any of the smallest bronchial ducts; ending in alveoli. |
| ~ alimentary 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 elimination. |
| ~ lactiferous duct | ducts of the mammary gland that carry milk to the nipple. |
| n. (plant) | 2. duct | a continuous tube formed by a row of elongated cells lacking intervening end walls. |
| ~ tracheophyte, vascular plant | green plant having a vascular system: ferns, gymnosperms, angiosperms. |
| ~ plant part, plant structure | any part of a plant or fungus. |
| ~ laticifer | a plant duct containing latex. |
| n. (artifact) | 3. duct | an enclosed conduit for a fluid. |
| ~ air-intake | a duct that admits air to be mixed with fuel. |
| ~ air 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" |
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