Etymologically

defluo

Etymology and origin of the Latin word defluo

Confidence
Established
Formation
Compound
First attested
Cato
Ultimate origin
Proto-Indo-European (*bʰlewH-)
Etymology tree
inherited borrowed derived
Latin fluo
Latin circumfluo
Latin confluo
Latin defluo
Latin diffluo
Latin effluo

Pronunciation

  • IPA (Classical): [ˈdeː.fɫu.oː][1]
  • IPA (Ecclesiastical): [ˈdɛː.flu.o][1]

Forms

dēfluō (present infinitive dēfluere, perfect active dēflūxī, supine dēflūxum); third conjugation, impersonal in the passive[1]

Etymology

It is from Latin dē- (“down”) + fluō (“to flow”).[2][1] De Vaan traces ⟨fluō⟩ to Proto-Italic *flow-e/o-, from Proto-Indo-European *bʰlewH- (“to flow”).[3]

Earliest recorded meaning

The OLD's earliest citations are from Cato, of flowing away, and Lewis & Short quote him on blood flowing down (quod sanguen dēfluxerat).[2][4] Köbler dates Cato 234–149 BC.[5]

Semantic evolution

It meant, of rivers, to flow down, as in Cicero and Sallust's flūmen monte dēfluēns; to float or sail downstream, as in Virgil; to flow away, drain off; of things to fall to the ground, and of hair to fall out, as in Cicero; and figuratively to be derived, stem from, as in Suetonius.[2][6]

In Ecclesiastical Latin it meant to pass away, wither, fall, cease, vanish, flow from or away.[7] It survives in Italian defluire and Portuguese defluir.[1]

Timeline

  • 234–149 BC – Cato uses it.[2][5]
  • 81–43 BC – Cicero uses it of rivers.[2][5]
  • 70–19 BC – Virgil uses it of sailing downstream.[2][5]
  • c. 75–c. 150 AD – Suetonius uses it of being derived.[2][5]

Meanings

Verb

  1. To flow down.[2]
  2. To float or sail downstream.[2]
  3. To flow away, drain off.[2]
  4. To fall to the ground, (of hair) to fall out.[2]
  5. To be derived, stem from.[2]

Word family

  • dēfluvium
  • dēfluus
  • defluxio
  • dēfluxus

References

  1. ^ a b c d e Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e f g h i j k l Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press
  3. ^ de Vaan, Michiel (2008), Etymological Dictionary of Latin and the other Italic Languages, Leiden Indo-European Etymological Dictionary Series 7, Leiden; Boston: Brill
  4. ^ Lewis, Charlton T.; Short, Charles (1879), A Latin Dictionary, Oxford: Clarendon Press
  5. ^ a b c d e Köbler, Gerhard (2010), Lateinisches Abkunfts- und Wirkungswörterbuch für Altertum und Mittelalter, online ed., koeblergerhard.de
  6. ^ Gaffiot, Félix (2016), Dictionnaire latin-français, new ed. by Gérard Gréco et al. (Gaffiot 2016), online ed.
  7. ^ Stelten, Leo F. (1995), Dictionary of Ecclesiastical Latin, Peabody, Mass.: Hendrickson
Cite this entry

“Defluo.” Etymologically, 17 Oct. 2026, etymologically.com/la/defluo. Accessed 17 Oct. 2026.

Last edited on . ·