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aqueduct

American  
[ak-wi-duhkt] / ˈæk wɪˌdʌkt /

noun

  1. Civil Engineering.

    1. a conduit or artificial channel for conducting water from a distance, usually by means of gravity.

    2. a bridgelike structure that carries a water conduit or canal across a valley or over a river.

  2. Anatomy. a canal or passage through which liquids pass.


aqueduct British  
/ ˈækwɪˌdʌkt /

noun

  1. a conduit used to convey water over a long distance, either by a tunnel or more usually by a bridge

  2. a structure, usually a bridge, that carries such a conduit or a canal across a valley or river

  3. a channel in an organ or part of the body, esp one that conveys a natural body fluid

"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

Etymology

Origin of aqueduct

< Medieval Latin aquēductus < Latin aquae ductus a drawing off of water. See aqua, duct

Explanation

An aqueduct is a bridge-like system built to move water from one location to another. The ancient Romans were particularly famous for their aqueducts and some still stand today. The Romans didn't invent aqueducts, but they did help spawn the English word for one. Aqueduct comes from the Latin word aquæductus, which itself is from the roots aqua, meaning water, and ducere, meaning "to lead." Because of the root word aqua, there is a tendency to try to spell aqueduct with an A in place of the E, but now you'll know better.

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Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

They were drilled decades ago, many of them when the city opened a second giant pipeline, nearly doubling its famous aqueduct to send more water south.

From Los Angeles Times • Oct. 18, 2025

The turmoil in Istanbul played out in the shadow of a Roman aqueduct.

From BBC • Sep. 9, 2025

Located in the middle of Mexico, Querétaro is a charming and colourful colonial-style city known for its dazzling stone aqueduct.

From BBC • Aug. 28, 2025

An extension was later completed connecting the aqueduct to the Mono Basin’s creeks, where the city has been diverting water since 1941.

From Los Angeles Times • Aug. 4, 2025

At the base of the aqueduct, the First and Second Cohorts were trying to encircle Polybotes, but they were taking a pounding.

From "The Son of Neptune" by Rick Riordan