1
: a bodily tube or vessel especially when carrying the secretion of a gland
2
a
: 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
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
Examples of duct in a Sentence
Noun
air ducts to provide ventilation
Recent Examples on the Web
Dr. Jamin Brahmbhatt, CNN Money, 26 Oct. 2025
Huguley was taken to a baseball field, duct-taped to a bench, doused in gasoline and lit on fire, according to state authorities.
—Liam Quinn, PEOPLE, 24 Oct. 2025
Kaitlyn McInnis, Better Homes & Gardens, 13 Apr. 2023
Fire crews accessed the roof and found a fire in the hood and duct system coming from the kitchen.
—Hannah Kirby, Journal Sentinel, 12 Dec. 2022
See All Example Sentences for duct
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Noun
Glandular tissue — the part made of milk ducts and supportive structures — responds to hormones.
—Dr. Jamin Brahmbhatt, CNN Money, 26 Oct. 2025
Huguley was taken to a baseball field, duct-taped to a bench, doused in gasoline and lit on fire, according to state authorities.
—Liam Quinn, PEOPLE, 24 Oct. 2025
Verb
Duct size and compatibility: Matching the exhaust fan's duct size and type with your existing ductwork or ventilation system can reduce the need for additional ductwork modifications or adapters.
—Kaitlyn McInnis, Better Homes & Gardens, 13 Apr. 2023
Fire crews accessed the roof and found a fire in the hood and duct system coming from the kitchen.
—Hannah Kirby, Journal Sentinel, 12 Dec. 2022
See All Example Sentences for duct
Cite this Entry
“Duct.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/duct. Accessed 4 Nov. 2025.
Copy CitationMedical Definition
duct
noun
: a bodily tube or vessel especially when carrying the secretion of a gland
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