Etymograph

English

fluctuation

Fluctuation comes from Latin fluctuō ‘to fluctuate, vacillate’, from fluctus ‘a wave, billow’, and ultimately from fluō ‘flow’.

  1. Latinc. 75 BCE–200 CEfluō‘flow’
  2. Latin, derivedc. 75 BCE–200 CEfluctus‘a wave, billow’
  3. Latin, derivedc. 75 BCE–200 CEfluctuō‘to fluctuate, vacillate’
  4. Latin, derivedc. 75 BCE–200 CEfluctuatiōnem
  5. Englishearliest quotation 1959fluctuation

attested reconstructed ? uncertain or disputed

Earlier history uncertain.

Lineage

  1. Latinc. 75 BCE–200 CEfluō‘flow’
  2. Latin, derivedc. 75 BCE–200 CEfluctus‘a wave, billow’
  3. Latin, derivedc. 75 BCE–200 CEfluctuō‘to fluctuate, vacillate’
  4. Latin, derivedc. 75 BCE–200 CEfluctuatiōnem
  5. Englishearliest quotation 1959fluctuation

Earliest quotation: 1959, Notes and News: St. Pancras-Bedford Diesel Trains: “The rolling stock has been specially designed to meet…”

Formed from fluctuate + -ion

Latin fluō ‘to flow, stream, pour’

Latin flūctus ‘wave’

Latin flūctuō ‘(of the sea) to surge, swell’

Latin flūctuātus

English fluctuate

Linked words

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

fluidity, confluent, 25 more

through Latin fluō ‘flow’

influence, fluid, influx, flux, fluent, confluence, fluency, affluence, flume, fluorine, fluvial, fluorite, fluor, 27 more

Today it means

noun A motion like that of waves; a moving in this and that direction; an irregular rising and falling.

Language periods are conventional ranges, not dates for this word.

Etymograph / Latin fluō / fluctuation