Factorial

3 definitions found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Factorial \Fac*to"ri*al\, a.
     1. Of or pertaining to a factory. --Buchanan.
        [1913 Webster]
  
     2. (Math.) Related to factorials.
        [1913 Webster]



From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Factorial \Fac*to"ri*al\, n. (Math.)
        (a) pl. A name given to the factors of a continued product
            when the former are derivable from one and the same
            function F(x) by successively imparting a constant
            increment or decrement h to the independent variable.
            Thus the product F(x).F(x + h).F(x + 2h) . . . F[x +
            (n-1)h] is called a factorial term, and its several
            factors take the name of factorials. --Brande & C.
        (b) The product of the consecutive whole numbers from
            unity up to any given number; thus, 5 factorial is the
            product of 5 times four times three times two times
            one, or 120.
            [1913 Webster +PJC]

From WordNet (r) 2.0 [wn]:

  factorial
       adj : of or relating to factorials
       n : the product of all the integers up to and including a given
           integer; "1, 2, 6, 24, and 120 are factorials"