duct

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duct

1. 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

Duct

A 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.

duct

1. ,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.

duct

A thin-wall tube installed in aircraft air-conditioning and heating systems to carry heated or cooled air for distribution to various aircraft locations.
References in periodicals archive ?
In Vitro Tension of the Isolated Epididymal Duct of Animals Treated with Vehicle and [As.
max], in grams of tension, g) and the potency of NE and CCh in inducing epididymal duct tension (expressed as [pEC.
The most complex condition, found in the Ambystomatidae, Hynobiidae, Proteidae, Salamandridae, and Siren idae, consists of the following ducts leading from the testes sequentially: the vasa efferentia, Bidder's duct (longitudinal collecting duct), afferent epididymal ducts, and efferent epididymal ducts.
Distal to the renal corpuscles, the lumina decrease in size due to the increase in size of the epithelium lining the epididymal ducts (Figs.
The efferent ductules start from each testicle, forming the epididymal ducts after converging, which are elongated and convoluted (CABRAL et al.
confirmed the evident predominance of protein degradation in spermatozoa during their progression through the epididymal duct and we agree with this affirmation based in our findings.
Cellular expression and localization of cytochrome P450 aromatase (Cyp19) in the male reproductive tract during the development Neonatal/ Tissue Fetal (2) Prepuberal (3) Adult (4) Testis Leydig cells + + + Sertoli cells + + + Germ cells - + + Efferent ductules (5) nd + - Epididymis Epithelial cells (6) nd + + Spermatozoa (1) np + (1) Spermatozoa present in epididymal ducts.