Etymograph

English

quattuorquadragintillion

Quattuorquadragintillion comes from Latin quattuor ‘four’, and goes back to Proto-Indo-European *kʷetwṓr.

  1. Proto-Indo-Europeanc. 4500–2500 BCE*kʷetwṓr1reconstructed
  2. Proto-Italicc. 1500–700 BCE*kʷettwōr1‘four’reconstructed
  3. Latinc. 75 BCE–200 CEquattuor2‘four’
  4. Englishearliest quotation 1999quattuorquadragintillion2

attested reconstructed ? uncertain or disputed deepest recorded ancestor

  1. 1 Wiktionary, Latin quattuor
  2. 2 Wiktionary, English quattuorquadragintillion
  3. Earliest quotation in Wiktionary’s entry: 1999, Clive Tooth, Could anyone tell me how to say this number?: “five trequinquagintillion, nine hundred fifty eight doquinquagintillion, nine hundred…”.

Lineage

  1. Proto-Indo-Europeanc. 4500–2500 BCE*kʷetwṓrWiktionary, Latin quattuorreconstructed
  2. Proto-Italicc. 1500–700 BCE*kʷettwōrWiktionary, Latin quattuor‘four’reconstructed
  3. Latinc. 75 BCE–200 CEquattuorWiktionary, English quattuorquadragintillion‘four’
  4. Englishearliest quotation 1999quattuorquadragintillionWiktionary, English quattuorquadragintillion. Earliest quotation in Wiktionary’s entry: 1999, Clive Tooth, Could anyone tell me how to say this number?: “five trequinquagintillion, nine hundred fifty eight doquinquagintillion, nine hundred…”

Linked words

through Proto-Indo-European *kʷetwṓr

four, 26 more

through Proto-Italic *kʷettwōr ‘four’

squadron, 24 more

through Latin quattuor ‘four’

square, squad, cater, quarry, cadre, quadruple, quadrant, quadratic, quatre, cuatro, quadra, quatrain, 25 more

Today it means

num 10¹³⁵.

Sources

Sources: Wiktionary, “quattuorquadragintillion”; the older steps come from the Wiktionary entry for Latin quattuor. 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 *kʷetwṓr / quattuorquadragintillion

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