aq·​ue·​duct | \ ˈa-kwə-ˌdəkt How to pronounce aqueduct (audio) \

Definition of aqueduct

1a : a conduit for water especially : one for carrying a large quantity of flowing water
b : a structure for conveying a canal over a river or hollow
2 : a canal or passage in a part or organ

Keep scrolling for more

Did You Know?

Based party on the Latin ducere, meaning "lead" or "conduct", the word aqueduct named an ancient civil-engineering marvel. You may have seen photos of the great arches of ancient aqueducts spanning valleys in countries throughout the old Roman Empire, practical pipelines that are also regarded as works of timeless beauty. From the 20th century, the 242-mile Colorado River Aqueduct, the 336-mile Central Arizona Project, and the 444-mile California Aqueduct are considered wonders of American engineering, but they are not renowned for their beauty. Most aqueducts today either are riverlike channels or run underground, perhaps appearing simply as a long mound.

Examples of aqueduct in a Sentence

marveled at the ancient Roman aqueducts that still carry water to distant villages

Recent Examples on the Web

Every second of the day, a nearby aqueduct delivered 18.5 gallons of water—the equivalent of the amount of water consumed today by the city of Siena—through a cistern and into copper tanks subsequently heated by the tunnels’ 50 brick ovens. Meilan Solly, Smithsonian, "You Can Now Tour the Tunnels Beneath Rome’s Baths of Caracalla," 20 June 2019 Cities prospered as Augustus and his successors built roads, aqueducts, baths, and amphitheaters to entertain the masses. National Geographic, "Who was Augustus Caesar?," 20 May 2019 Greco spoke at a regular board meeting of the water conservation district, which uses power from the generating plant to operate an aqueduct system that moves Colorado River Water to cities, farmers and tribes in central and southern Arizona. Washington Post, "Firm eyeing purchase of Arizona’s Navajo Generating Station," 7 June 2018 Orte Mile 130 Why StopThis medieval hill town, with 16th-century towers and a Renaissance-era aqueduct, sees very few travelers. Erin Florio, Condé Nast Traveler, "6 Places You Absolutely Have to Stop on a Florence-to-Rome Road Trip," 12 Feb. 2018 Among the property’s other features is a Roman pool the size of a football field, with a Roman water garden and grotto of arches designed to recall an ancient Roman aqueduct. Katherine Clarke, WSJ, "The Estate That Wants to Be Silicon Valley’s Priciest Home," 18 Oct. 2018 The Resort at Pelican Hill, located in the ultra-exclusive Newport Coast ZIP code, has a luxurious Tuscan vibe, well-manicured hills overlooking the Pacific, beautiful villas and bungalows, and Roman aqueduct-style architecture. Archana Ram, Condé Nast Traveler, "3 Best Day Trips from San Diego," 5 Mar. 2018 In addition, a giant aqueduct passed through the valley on its way to Santa Barbara. Russell Gold, WSJ, "Harvard Quietly Amasses California Vineyards—and the Water Underneath," 10 Dec. 2018 Crews had scrambled to break up the bergs Sunday after ice began to block the pipes and the reservoir level dropped, said Thomas Jacobus, the aqueduct’s general manager. Steve Hendrix, Washington Post, "‘Not built for this’: What fails in the extreme cold? Just about everything.," 4 Jan. 2018

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

See More

First Known Use of aqueduct

1538, in the meaning defined at sense 1a

History and Etymology for aqueduct

Latin aquaeductus, from aquae (genitive of aqua) + ductus act of leading — more at duct

Keep scrolling for more

Learn More about aqueduct

Statistics for aqueduct

Last Updated

4 Jul 2019

Look-up Popularity

Time Traveler for aqueduct

The first known use of aqueduct was in 1538

See more words from the same year

Keep scrolling for more

More Definitions for aqueduct



English Language Learners Definition of aqueduct

: a structure that looks like a bridge and that is used to carry water over a valley also : a pipe or channel that is used to bring water to an area


aq·​ue·​duct | \ ˈa-kwə-ˌdəkt How to pronounce aqueduct (audio) \

Kids Definition of aqueduct

: an artificial channel used to carry water over a valley


aq·​ue·​duct | \ ˈak-wə-ˌdəkt How to pronounce aqueduct (audio) \

Medical Definition of aqueduct

: a canal or passage in a part or organ

Keep scrolling for more

More from Merriam-Webster on aqueduct

Rhyming Dictionary: Words that rhyme with aqueduct

Thesaurus: All synonyms and antonyms for aqueduct

Spanish Central: Translation of aqueduct

Nglish: Translation of aqueduct for Spanish Speakers Encyclopedia article about aqueduct

Comments on aqueduct

What made you want to look up aqueduct? Please tell us where you read or heard it (including the quote, if possible).


a small bunch of flowers

Get Word of the Day daily email!

Test Your Vocabulary

Farm Idioms Quiz

  • cow coming home
  • What does 'poke' refer to in the expression 'pig in a poke'?
Spell It

Can you spell these 10 commonly misspelled words?

Word Winder's CrossWinder

Test Your Knowledge - and learn some interesting things along the way.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!