adj. Of or pertaining to a factory. (Math.) Related to factorials.
- 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 FFF(x + 2h) . . . F is called a factorial term, and its several factors take the name of factorials. (b) The product of the consecutive numbers from unity up to any given number.