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 ?
com)-- The BlueDuct[R], from AQC Industries, is the first underground air duct system to receive NSF P374 certification for R-10 thermal efficiency.
Ducts attract dangerous dust and debris during painting and renovation.
The new DVD Fiber Glass Duct Board Fabrication - Instructional Training Series is available from NAIMA by calling 703.
This paper builds on prior FEM studies by calculating R-values for traditional, encapsulated, buried, and buried & encapsulated ducts using closed-form equations and FEM under a consistent set of assumptions.
The big announcement is duct tape is coming out with 10 more colors," Hilton says, her voice rising in excitement.
The testes are elongate and lie slightly ventrolateral to the cranial epididymal and Wolffian ducts of the genital kidney (Figs.
Pericholecystic biliary anomalies that are often overlooked at the time of laparoscopic cholecystectomy include both aberrant ducts and accessory ducts such as Luschka's duct anomaly (a meshwork of small ducts that extend from the right lobe of the liver in the gallbladder fossa to the right hepatic or common hepatic duct).
Very little is known about the cause of biliary atresia, although it has been traced to the immune system responding to an infection in the liver and bile ducts.
the typical scheme of air flow into the respective air distribution element has been presented, where it can be seen that a visible disorder of air flow lines occurs in it, a vigorous air velocity increase in the ventilation duct entrance--as well as a detachment of the air flow from the duct walls allowing the creation of whirling zones.
Over-blowing happens when the exhaust ducts are constricted.
Duct leakage also results in a large decrease in your system's overall efficiency.
The supply ducts should be rum through the upper shelter ports and the return ducts through the lower ports.