tre-

prefix

Used for forming names of large numbers as the third in the sequence in the Conway–Guy system.

OriginLatin trēs →
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Meanings

prefix
  1. Used for forming names of large numbers as the third in the sequence in the Conway–Guy system.
    1 more example

    five trequinquagintillion, nine hundred fifty eight doquinquagintillion, nine hundred thirty five unquinquagintillion, nine hundred eighty quinquagintillion, three hundred sixty two novemquadragintillion, six hundred forty five octoquadragintillion, eight hundred twenty five septenquadragintillion, one hundred sixteen sexquadragintillion, one hundred five quinquadragintillion, nine hundred forty nine quattuorquadragintillion, forty seven trequadragintillion

    1999 August 30, Clive Tooth, “Could anyone tell me how to say this number?”, in sci.math (Usenet), archived from the original on 30 Dec 2025

Origin

  1. Latintrēs“three”
  2. Englishtre-

From a form of Latin trēs (“three”) used in trēdecim (“thirteen”).

More words from Latin

Full word history & related roots →
Cite this entry
APA

tre-. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/tre-

MLA

“tre-.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/tre-. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “tre-,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/tre-.

Source: tre- on Wiktionary, CC BY-SA 4.0.