A bridge-like structure carrying a channel of water across a valley or other gap; more broadly, any artificial channel for transporting water over a distance.
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Latin16th centurywell-attested
From Latin "aquaeductus" (a conveyance of water, an aqueduct), a compound of "aquae" (genitive singular of "aqua," water) and "ductus" (a leading, a conduit), past participle of "dūcere" (to lead, draw, bring). The first element "aqua" derives from PIE *h₂ekʷ-eh₂ (water), which has cognates in Gothic "aƕa" (river, water), OldEnglish "ēa" (river, surviving in place names like Eaton), Old Norse "á" (river), and possibly Old Irish "oiche" (water). The second elementcomes
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The Romans built over 400 aqueducts across their empire, some stretching over 90 kilometers. The Pont du Gard in southern France, built around 19 BCE, still stands at 49 meters tall — and uses no mortar. The precision of Roman engineering allowed water to flow by gravity alone with a gradient as slight as 1 meter per kilometer, making
productive root: Latin "dux" (leader, whence "duke"), "ēducāre" (to lead out, whence "educate"), "prōdūcere" (to lead forward, whence "produce"), "redūcere" (to lead back, whence "reduce"), Italian "duce" (leader), and possibly Old English "tēon" (to pull, draw). Roman aqueducts were among the greatest engineering
water channel. The compound perfectly encodes the engineering principle: water is led from source to city by gravity through a constructed channel. Key roots: dūcere / ductum (Latin: "to lead"), aqua (Latin: "water"), *dewk- (Proto-Indo-European: "to lead"), *h₂ekʷ-eh₂- (Proto-Indo-European: "water").