flensing is a form of:

Factorial



ENGLISH MEANING
noun
1.
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.
2.
The product of the consecutive numbers from unity up to any given number.
adjective
1.
Of or pertaining to a factory.
2.
Related to factorials.