from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. A pipe or channel designed to transport water from a remote source, usually by gravity.
  • n. A bridgelike structure supporting a conduit or canal passing over a river or low ground.
  • n. Anatomy A channel or passage in an organ or a body part, especially such a channel for conveying fluid.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. An artificial channel that is constructed to convey water from one location to another.
  • n. A structure carrying water over a river or depression, especially in regards to ancient aqueducts.

from the GNU version of the Collaborative International Dictionary of English

  • n. A conductor, conduit, or artificial channel for conveying water, especially one for supplying large cities with water.
  • n. A canal or passage.

from The Century Dictionary and Cyclopedia

  • n. A conduit or channel for conducting water from one place to another.
  • n. In anatomy, same as aquœductus.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. a conduit that resembles a bridge but carries water over a valley


Latin aquaeductus : aquae, genitive of aqua, water; see aqua + ductus, a leading; see duct.
(American Heritage® Dictionary of the English Language, Fourth Edition)
Adapted from the Latin aquaeductus ("conveyance of water"), from aqua ("water") + dūcō ("I lead”, “I bring"); compare the French aquéduc. (Wiktionary)



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  • "Ah" for me.

    July 1, 2011

  • Oh, weird--I hadn't thought about it before, but if it's a Roman aqueduct, I'll say it with the "a" in "father," and if there are no Romans in the sentence, I'll say it with the "a" in "cat."

    July 1, 2011

  • I'm with yarb. At least when I'm speaking English not Italian.

    July 1, 2011

  • The classicist in me insists upon 'a' as in 'father' for both.

    July 1, 2011

  • My 'a' in both aqua and aqueduct is as in 'cat'.

    July 1, 2011

  • Looks like the new Wordnik font is not kind to IPA symbols. :-(

    June 30, 2011

  • A quick unscientific survey: Do you say /ækwədʌkt/ or /ɑkwədʌkt/? In other words, does the first vowel rhyme with "yeah" or with "blah"?

    I just realized that I use /æ/ for "aqueduct" but /ɑ/ for "aqua", which seems terribly inconsistent of me.

    June 30, 2011