Tredecillion

num

num ·Rare ·Advanced level

Definitions

Numeral
  1. 1
    10⁴². US, rare

    "The names of the periods above trillion are as follows [...] 15th, tredecillion [...]"

  2. 2
    10⁷⁸. Australia, British, dated, rare

Synonyms

All synonyms
10421078googoljillionquadrillionzillion

Example

More examples

"The names of the periods above trillion are as follows [...] 15th, tredecillion [...]"

Etymology

From Latin trēdec(im) (“thirteen”) + -illion. By surface analysis, tre- + decillion.

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.