Etymograph

English

deflux

Deflux comes from Latin dēfluō ‘to flow or run down’, and goes back to Proto-Indo-European *bʰlewH- ‘to overflow’.

  1. Proto-Indo-Europeanc. 4500–2500 BCE*bʰlewH-1‘to overflow’reconstructed
  2. Proto-Indo-Europeanc. 4500–2500 BCE*bʰluH-yé-ti1uncertain
  3. Latinc. 75 BCE–200 CEfluō1‘flow’
  4. Latinc. 75 BCE–200 CEdēfluō2as defluere‘to flow or run down’
  5. Latinc. 75 BCE–200 CEdefluxus2
  6. Englishearliest quotation 1627deflux2

attested reconstructed ? uncertain or disputed deepest recorded ancestor

  1. 1 Wiktionary, Latin defluo
  2. 2 Wiktionary, English deflux
  3. Earliest quotation in Wiktionary’s entry: 1627, VII. Century.: “The cause is a temperate conglutination ; for both…”.

Lineage

  1. Proto-Indo-Europeanc. 4500–2500 BCE*bʰlewH-Wiktionary, Latin defluo‘to overflow’reconstructed
  2. Proto-Indo-Europeanc. 4500–2500 BCE*bʰluH-yé-tiWiktionary, Latin defluouncertain
  3. Latinc. 75 BCE–200 CEfluōWiktionary, Latin defluo‘flow’
  4. Latinc. 75 BCE–200 CEdēfluōWiktionary, English defluxas defluere‘to flow or run down’
  5. Latinc. 75 BCE–200 CEdefluxusWiktionary, English deflux
  6. Englishearliest quotation 1627defluxWiktionary, English deflux. Earliest quotation in Wiktionary’s entry: 1627, VII. Century.: “The cause is a temperate conglutination ; for both…”

Linked words

through Proto-Indo-European *bʰluH-yé-ti

fluidity, confluent, 24 more

through Latin fluō ‘flow’

influence, fluid, fluent, influx, confluence, fluctuate, fluency, fluctuation, affluence, fluorine, flume, fluvial, fluorite, fluor, 26 more

Today it means

noun downward flow

Sources

Sources: Wiktionary, “deflux”; the older steps come from the Wiktionary entry for Latin defluo. By Wiktionary contributors, CC BY-SA 4.0, via kaikki.org (dump of Oct 3 2026); text adapted and restructured. Language periods are conventional ranges, not dates for this word. License.

Etymograph / Proto-Indo-European *bʰlewH- / deflux