ductless

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.

ductless duct·less (dŭkt'lĭs)
adj.
Lacking a duct, as glands that only secrete internally.

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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