# tredecillion

> English word · Numeral

## Definitions
1. 10⁴².
2. 10⁷⁸.

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

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/tredecillion