\ ˈdəkt How to pronounce duct (audio) \

Definition of duct

 (Entry 1 of 2)

1 : a bodily tube or vessel especially when carrying the secretion of a gland
2a : a pipe, tube, or channel that conveys a substance
b : a pipe or tubular runway for carrying an electric power line, telephone cables, or other conductors
3 : a tube or elongated cavity (such as a xylem vessel) in plant tissue
4 : a layer (as in the atmosphere or the ocean) which occurs under usually abnormal conditions and in which radio or sound waves are confined to a restricted path


ducted; ducting; ducts

Definition of duct (Entry 2 of 2)

transitive verb

1 : to enclose in a duct
2 : to convey (something, such as a gas) through a duct also : to propagate (something, such as radio waves) through a duct

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Other Words from duct


ductal \ ˈdək-​tᵊl How to pronounce ductal (audio) \ adjective
ductless \ ˈdək(t)-​ləs How to pronounce ductless (audio) \ adjective

Examples of duct in a Sentence

Noun air ducts to provide ventilation
Recent Examples on the Web: Noun Its new nose features compact horizontal LED headlights topped by new brake cooling ducts. Scott Oldham, Car and Driver, "2020 Ferrari F8 Tributo Demands Driver Involvement," 29 May 2020 Irradiating air in the climate control system’s ducts is another possibility. Mark Phelan, Detroit Free Press, "Here are ways your next car could be virus-proof," 16 May 2020 Using frozen dumplings as skulls and air-conditioning ducts as neck ruffs, re-enactors pair their own photos with images of the originals. Remy Tumin, New York Times, "Reopening, Coronavirus, N.F.L. Draft: Your Weekend Briefing," 26 Apr. 2020 Vinyl flooring and rubber pads were fixed to the gym floor, swamp coolers were placed on the roof to provide cool air, and two large exhaust ducts were installed to provide proper ventilation, said Lt. USA TODAY, "Treehouse isolation, python masks, farm-to-food bank: News from around our 50 states," 21 Apr. 2020 In one example, scammers are offering HVAC duct cleaning as a way to protect your home from the virus, the FCC said. Harmeet Kaur, CNN, "Beware of these fake text messages and robocalls going around about the coronavirus," 19 Apr. 2020 At that time, pavilion B amounted to nothing more than 6,500 square meters of empty hall space, pavement and ceiling ducts. Janna Brancolini, Los Angeles Times, "In coronavirus-stricken Italy, a new field hospital rises at the foot of the Alps," 5 Apr. 2020 Use a high-powered vacuum (my tool of choice is a Shop-Vac) to vacuum just inside the ducts, removing any dust or debris. Patricia Shannon, Southern Living, "Cleaning My Air Vents Is the Most Therapeutic Thing I've Done in the Past Two Months—Here's How I Did It," 14 May 2020 Therefore, the easiest way to get rid of ventilation noises is to just close the air duct. Chris Lee, Ars Technica, "Hollow corkscrews may put a cork in noisy ventilation," 14 Apr. 2020 Recent Examples on the Web: Verb According to the Department of Energy, ducts that leak air can add hundreds of dollars to your energy bill each year. Jessica Levy, Indianapolis Star, "4 ways this home repair will lower your energy bills and boost your health," 28 June 2019 Sterigenics executives said there would be dramatic improvements last summer after the company ducted vents from its sterilization chambers into existing pollution controls at both Willowbrook facilities. Michael Hawthorne, chicagotribune.com, "In a bid to reopen shuttered Willowbrook plant, Sterigenics proposes tighter controls on cancer-causing gas," 27 June 2019 Back in March, DARPA announced that it had awarded company called Aurora Flight Sciences a contract to start test its far-out design for a VTOL craft propelled by two dozen ducted fans. Eric Limer, Popular Mechanics, "DARPA's Bonkers 24-Prop Plane Takes Flight," 19 Apr. 2016 Apprentices receive lower pay than more experienced metal fabricators, who make ducting for heating, ventilation and air conditioning systems, and are normally in demand by contractors. Jeannette Lee Falsey, Alaska Dispatch News, "How bad is Alaska’s recession? Economists call it ‘moderate’ so far.," 26 July 2017 Miles of neatly ducted, shielded cables run along the ceiling. Sebastian Anthony, Ars Technica, "Taking a flight on the best Boeing 757," 3 July 2017 The District 181 Board Monday approved paying for a fitness mezzanine and expanded storage at about $53,400, two operable windows per classroom for about $217,400 and ducted fan coil units in lieu of cassettes for about $134,500. Chuck Fieldman, chicagotribune.com, "Track not part of $400,000 in Hinsdale Middle School additions," 27 June 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'duct.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of duct


1667, in the meaning defined at sense 1


1936, in the meaning defined at sense 1

History and Etymology for duct


New Latin ductus, from Medieval Latin, aqueduct, from Latin, act of leading, from ducere to lead — more at tow entry 1

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Statistics for duct

Last Updated

4 Jun 2020

Cite this Entry

“Duct.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/duct. Accessed 7 Jun. 2020.

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More Definitions for duct


How to pronounce duct (audio)

English Language Learners Definition of duct

: a pipe or tube for air, water, electric power lines, etc., to pass through
: a tube in the body that carries a particular liquid


\ ˈdəkt How to pronounce duct (audio) \

Kids Definition of duct

: a pipe, tube, or vessel that carries something air-conditioning ducts tear ducts


\ ˈdəkt How to pronounce duct (audio) \

Medical Definition of duct

: a bodily tube or vessel especially when carrying the secretion of a gland

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More from Merriam-Webster on duct

Thesaurus: All synonyms and antonyms for duct

Spanish Central: Translation of duct

Nglish: Translation of duct for Spanish Speakers

Britannica English: Translation of duct for Arabic Speakers

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