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
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005

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.
Illustrated Dictionary of Architecture Copyright © 2012, 2002, 1998 by The McGraw-Hill Companies, Inc. All rights reserved

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.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

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.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.

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.
An Illustrated Dictionary of Aviation Copyright © 2005 by The McGraw-Hill Companies, Inc. All rights reserved
References in periodicals archive ?
published a cohort study with an association between neuronal injury markers and intrauterine growth restriction; they found no significance for NSE, but they observed a positive correlation for umbilical artery PI, RI, ductus venosus RI, S/d ratio with NSE.
Papillae anales slightly narrow with some short satae; apophyses posteriores very slender, apophyses posteriores 2.02 times longer than apophyses anteriores; apophyses anteriores relatively thick; antrum well developed; ductus bursae narrow and relatively short; corpus bursae slightly long.
Transcatheter closure of patent ductus arteriosus: Evaluating the effect of the learning curve on the outcome.
The commonest congenital acyanotic heart diseases were ventricular septal defect (VSD), atrial septal defect (ASD), combined VSD with patent ductus arteriosus (PDA), while tetralogy of fallot (TOF) was commonest cyanotic heart disease followed by transportation of the great arteries (TGA), VSD and pulmonary artery (PA), ASD, VSD, PDA.
Nicolaides, "Prevalence and outcome of absence of ductus venosus at 11 +0 to 13 +6 weeks," Fetal Diagnosis and Therapy, vol.
In our study, patent ductus arteriosus along with TOF was diagnosed in 2.9%.
Data Ductus is a world-leading provider of network and service orchestration and automation solutions based on best of breed products.
Comparisons were conducted in the ventricular septal defect, atrial septal defect, patent ductus arteriosus, tetralogy of Fallot, and overall cardiovascular malformations subgroups because they consisted of relatively large sample sizes.
Introduction: Ductus venosus is a connection present in fetal circulation between left umbilical vein and right hepatocardiac channel.
Ductus Arteriosus (DA) is the vascular communication connecting pulmonary artery to aorta and represents one of the fundamental shunts of prenatal life circulation [1, 2].
These included a right sided aortic arch, a prominent ductus diverticulum, and a retroesophageal ligamentum arteriosum.