[ duhkt ]
See synonyms for duct on Thesaurus.com
  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.

  1. Botany. a cavity or vessel formed by elongated cells or by many cells.

  2. Electricity. a single enclosed runway for conductors or cables.

  3. Printing. (in a press) the reservoir for ink.

verb (used with object)
  1. to convey or channel by means of a duct or ducts: Heat from the oven is ducted to the outside.

Origin of duct

First recorded in 1640–50; from Latin ductus “conveyance (of water),” hence “channel” (in Medieval Latin ), equivalent to duc- (variant stem of dūcere “to lead”) + -tus suffix of verbal action

Other words from duct

  • ductless, adjective

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use duct in a sentence

  • When the valve is closed altogether the primary air passes through ducts in the valve itself, giving the proper amount for idling.

    Aviation Engines | Victor Wilfred Pag
  • This he carries in two small sacs that lie under his tail, with ducts leading outward about as large as the tube of a goose-quill.

    The Desert Home | Mayne Reid
  • These glands have small ducts, ending in minute apertures on the surface of the skin.

British Dictionary definitions for duct


/ (dʌkt) /

  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

  1. a narrow tubular cavity in plants, often containing resin or some other substance

  2. Also called: conduit a channel or pipe carrying electric cable or wires

  3. a passage through which air can flow, as in air conditioning

  4. the ink reservoir in a printing press

Origin of duct

C17: from Latin ductus a leading (in Medieval Latin: aqueduct), from dūcere to lead

Derived forms of duct

  • ductless, adjective

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Scientific definitions for duct


[ dŭkt ]

  1. 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 © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.