What does aqueduct mean?
An aqueduct is an artificial structure designed to transport water over long distances, most famously exemplified by the monumental stone channels of ancient Rome. Typically comprising a combination of underground pipes, open channels, and graceful arched bridges spanning valleys, aqueducts rely largely on gravity, following a gentle downhill gradient from source to destination. The word derives from Latin and remains standard in both British and American English. Today it is used not only for historic structures but also for modern water-supply systems, such as California's vast aqueducts moving river water to cities and farmland. By analogy, anatomy borrows the term for narrow bodily passages carrying fluid, like the cerebral aqueduct. The word evokes impressive engineering, antiquity, and civic ingenuity, making it a useful term in discussions of history, infrastructure, and urban development.
nounAn artificial channel or structure, typically a bridge-like construction of stone or concrete, built to convey water from a distant source to a town or other destination.
- An engineered channel or bridged conduit that transports water over a distance, especially one supplying a city.
- (Anatomy/zoology) A narrow natural passage in the body through which fluid passes, such as the cerebral aqueduct in the brain.
"The ancient Roman aqueduct still carried fresh water into the city after two thousand years."
"Engineers restored the crumbling aqueduct to bring mountain spring water to the drought-stricken valley."
"The cerebral aqueduct channels cerebrospinal fluid between the ventricles of the brain."
Standard regular plural; commonly used when referring to multiple structures, e.g. 'the aqueducts of Rome'.
"The empire maintained hundreds of aqueducts across its provinces."
Some Roman aqueducts built nearly two millennia ago are so precisely engineered that they still deliver water today — all using gravity alone.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of aqueduct
Aqueduct comes directly from Latin 'aquaeductus', formed from 'aqua' (water) plus 'ductus' (a leading or conveying), meaning literally a leader of water. The Romans coined the term for their celebrated water-supply channels, and the word passed into English via French during the medieval and early modern period, becoming established as English expanded its interest in classical engineering. It shares its root with related words built on 'aqua', such as aquatic, aquarium, and aqueous, and with 'ductus'-derived terms like duct.
How aqueduct is actually used
The word is neutral in register and appears in both technical engineering contexts and everyday historical discussion. In anatomy and veterinary medicine, 'aqueduct' names small fluid passages (e.g., the aqueduct of Sylvius), a usage derived by analogy with water conduits.
Easily confused with aqueduct
A viaduct carries a road or railway across a valley on arches, whereas an aqueduct is specifically built to carry water.
A canal is a navigable waterway for boats and ships, while an aqueduct conveys water for supply rather than transport.