- Confidence
- Established
- Formation
- Compound
- First attested
- Cato
- Ultimate origin
- Proto-Indo-European (*bʰlewH-)
Etymology tree
Pronunciation
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
- To flow down.[2]
- To float or sail downstream.[2]
- To flow away, drain off.[2]
- To fall to the ground, (of hair) to fall out.[2]
- To be derived, stem from.[2]
Word family
- dēfluvium
- dēfluus
- defluxio
- dēfluxus
Related words
References
- ^ a b c d e Wiktionary, the free dictionary, https://en.wiktionary.org
- ^ 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
- ^ de Vaan, Michiel (2008), Etymological Dictionary of Latin and the other Italic Languages, Leiden Indo-European Etymological Dictionary Series 7, Leiden; Boston: Brill
- ^ Lewis, Charlton T.; Short, Charles (1879), A Latin Dictionary, Oxford: Clarendon Press
- ^ a b c d e Köbler, Gerhard (2010), Lateinisches Abkunfts- und Wirkungswörterbuch für Altertum und Mittelalter, online ed., koeblergerhard.de
- ^ Gaffiot, Félix (2016), Dictionnaire latin-français, new ed. by Gérard Gréco et al. (Gaffiot 2016), online ed.
- ^ 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.
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