Factorial is a 9 letter English word. It's valid Words with friends word worth 16 points.
You can make 459 anagrams from letters in factorial (aacfilort).
First recorded in 1810-20; factor + -ial
These phenomena demonstrate the existence of a complex interrelation between the factorial units.
In its place stands the factorial hypothesis, evolved by workers in America, England, and France at about the same time.
It is by no means unlikely that various dark forms of lubricipeda correspond with a progressive series of factorial additions.
The possible connections within it were factorial one hundred thousand.