factorialPronunciation: /fakˈtɔːrɪəl/Definition of factorial noun Mathematics the product of an integer and all the integers below it; e.g. factorial four (4!) is equal to 24. (Symbol: !) the product of a series of factors in an arithmetical progression. adjective chiefly Mathematics relating to a factor or factorial: a factorial designDerivatives factorially adverb factorial in other Oxford dictionaries Definition of factorial in the US English dictionary
