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Word of the Day Tuesday, June 9, 2026

factorial

/ˌfæk.tɔːr.ɪˈæl/ noun · British & US
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What does factorial mean?

noun

A product of an integer and all the positive integers below it, e.g. 5 factorial is 5 × 4 × 3 × 2 × 1 = 120. In mathematics, the factorial of a non-negative integer n, denoted by n!, is the product of all positive integers less than or equal to n.

Example

"The calculation of 10 factorial is a complex process that requires a lot of time and effort."

Definition generated by AI and curated by RJS Tech Solutions LLP.

Synonyms for factorial

Antonyms of factorial

Rhymes with factorial

Etymologically related