Etymograph

English

fluor

Fluor comes from Latin fluor ‘flow’, 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‘to flow, stream, pour’
  4. Latinc. 75 BCE–200 CEfluor1‘flow’
  5. Englishtodayfluor1

attested reconstructed ? uncertain or disputed deepest recorded ancestor

  1. 1 Wiktionary, English fluor

Lineage

  1. Proto-Indo-Europeanc. 4500–2500 BCE*bʰlewH-Wiktionary, English fluor‘to overflow’reconstructed
  2. Proto-Indo-Europeanc. 4500–2500 BCE*bʰluH-yé-tiWiktionary, English fluoruncertain
  3. Latinc. 75 BCE–200 CEfluōWiktionary, English fluor‘to flow, stream, pour’
  4. Latinc. 75 BCE–200 CEfluorWiktionary, English fluor‘flow’
  5. EnglishtodayfluorWiktionary, English fluor

Linked words

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

fluidity, confluent, 26 more

through Latin fluō ‘to flow, stream, pour’

influence, fluid, influx, fluent, flux, confluence, fluctuate, fluctuation, fluency, affluence, flume, fluvial, 28 more

Today it means

noun The mineral fluorite.

Sources

Sources: Wiktionary, “fluor”. 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- / fluor

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