duct

[duhkt]
noun
1.
any tube, canal, pipe, or conduit by which a fluid, air, or other substance is conducted or conveyed.
2.
Anatomy, Zoology. a tube, canal, or vessel conveying a body fluid, especially a glandular secretion or excretion.
3.
Botany. a cavity or vessel formed by elongated cells or by many cells.
4.
Electricity. a single enclosed runway for conductors or cables.
5.
Printing. (in a press) the reservoir for ink.
verb (used with object)
6.
to convey or channel by means of a duct or ducts: Heat from the oven is ducted to the outside.

Origin:
1640–50; < Latin ductus conveyance (of water), hence channel (in ML), equivalent to duc- (variant stem of dūcere to lead) + -tus suffix of verbal action

ductless, adjective
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
duct (dʌkt)
 
n
1.  a tube, pipe, or canal by means of which a substance, esp a fluid or gas, is conveyed
2.  any bodily passage, esp one conveying secretions or excretions
3.  a narrow tubular cavity in plants, often containing resin or some other substance
4.  Also called: conduit a channel or pipe carrying electric cable or wires
5.  a passage through which air can flow, as in air conditioning
6.  the ink reservoir in a printing press
 
[C17: from Latin ductus a leading (in Medieval Latin: aqueduct), from dūcere to lead]
 
'ductless
 
adj

Collins English Dictionary - Complete & Unabridged 10th Edition
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Etymonline
Word Origin & History

duct
1640s, from L. ductus "a leading," pp. of ducere "to lead" (see duke). Ductile was in M.E.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

duct (dŭkt)
n.
A tubular bodily canal or passage, especially one for carrying a glandular secretion such as bile.


duct·al adj.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
duct   (dŭkt)  Pronunciation Key 
A tube or tubelike structure through which something flows, especially a tube in the body for carrying a fluid secreted that is by a gland.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Example sentences
Only one of the three pipe bombs in the duct-tape-clad package actually
  detonated.
Infection in the common bile duct from obstruction is common and serious.
Eventually, the polyester is unable to support the weight of the algae, and
  they fall off into a collection duct.
Insulation reduces the exchange of heat through a surface such as a wall,
  attic, duct or roof.
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