# factorial

> English word · Noun · IPA /fækˈtɔːɹi.əl/ · frequency rank #51,697

## Definitions
1. The result of multiplying a given number of consecutive integers from 1 to the given number. In equations, it is symbolized by an exclamation mark (!). For example, 5! = 1 × 2 × 3 × 4 × 5 = 120.

## Etymology
From factor + -ial.

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