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ductus

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Etymology and origin of the Latin word ductus

Confidence
Established
Formation
Derivation
First attested
c. 250–184 BC, Plautus
Ultimate origin
Proto-Indo-European (*deuk-)
Etymology tree
inherited borrowed derived
Latin duco
Latin diduco
Latin ducto
Latin reduco
English reduce
Latin subduco
Latin ductus
Latin ductor
Latin perduco
Latin traduco
English traduce
Latin produco
English produce
English producer
French produire
Latin seduco
Latin seductus

Pronunciation

  • Classical: [ˈdʊk.tʊs][1]
  • Ecclesiastical: [ˈduk.tus][1]

Forms

ductus m (genitive ductūs); fourth declension[1] An inscription has a neuter ductum.[2][3]

Etymology

It is from Latin dūcō (“to lead, draw”) + -tus, a fourth-declension action noun.[2][3][1] De Vaan traces dūcō to Proto-Italic *douk-e- and Proto-Indo-European *deuk-e/o- (“to draw”).[4] Cognate with Middle Welsh dwc (“leads, brings”) and Albanian nduk (“to pull”).[4]

Earliest recorded meaning

De Vaan and Köbler date it from Plautus,[4][5] who in the Amphitruo speaks of a commander who conducted the state's business under his own command.[2]

Semantic evolution

Its first sense is military leadership or command, and Ovid uses it figuratively of a girl captured under his leadership.[2] It also means the conveyance of water, and aquae ductus, also written as one word, is an aqueduct, as in Cicero's letters and Frontinus' work on the aqueducts of Rome.[2][6] It means a movement in a particular line, as Seneca's carver guiding his skilled hand along the breast, a line drawn or an outline, and a linear arrangement, as Cicero's line of the city wall.[2] In rhetoric it is a line of treatment, as in Quintilian.[2] It also means drawing or pulling, as Columella's pruning done with a draw of the knife, and a draught of fish.[2]

Church Latin glosses it leadership, direction, purpose, and the swing of a censer.[7] In medieval Latin it can mean carting.[8] English borrowed duct in the 1640s.[9]

Timeline

  • c. 250–184 BC – Plautus of military command.[2][4][5]
  • 81–43 BC – Cicero of an aqueduct and of the line of a wall.[2][5]
  • 43 BC–18 AD – Ovid of a girl captured under his leadership.[2][5]
  • 4 BC–65 AD – Seneca of a carver's movements.[2][5]
  • 1640s – Borrowed into English as duct.[9]

Meanings

Noun

  1. Military leadership, command; generalship.[2][6][1]
  2. The conveyance of water;[2][6][1] aquae ductus, an aqueduct.[2][6][1]
  3. Movement in a particular line, a controlled movement.[2]
  4. A line drawn, an outline; a linear arrangement.[2][6]
  5. (rhetoric) A line of treatment; the structure of a play.[2][1]
  6. Drawing, pulling; a draught of fish.[2]
  7. (Ecclesiastical Latin) Direction, purpose; the swing of a censer.[7]
  8. (Medieval Latin) Carting.[8]

Word family

  • interductus
  • aquaeductus
  • ōviductus

References

  1. ^ a b c d e f g h Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e f g h i j k l m n o p q r s Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press
  3. ^ a b Thesaurus linguae Latinae (1900–), Leipzig: Teubner; Berlin: De Gruyter; open-access ed., Munich: Bayerische Akademie der Wissenschaften
  4. ^ a b c d de Vaan, Michiel (2008), Etymological Dictionary of Latin and the other Italic Languages, Leiden Indo-European Etymological Dictionary Series 7, Leiden; Boston: Brill
  5. ^ a b c d e Köbler, Gerhard (2010), Lateinisches Abkunfts- und Wirkungswörterbuch für Altertum und Mittelalter, online ed., koeblergerhard.de
  6. ^ a b c d e Lewis, Charlton T.; Short, Charles (1879), A Latin Dictionary, Oxford: Clarendon Press
  7. ^ a b Stelten, Leo F. (1995), Dictionary of Ecclesiastical Latin, Peabody, Mass.: Hendrickson
  8. ^ a b Niermeyer, J. F. (1976), Mediae Latinitatis Lexicon Minus, Leiden: Brill
  9. ^ a b Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
Cite this entry

“Ductus.” Etymologically, 19 Oct. 2026, etymologically.com/la/ductus. Accessed 20 Oct. 2026.

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