Dictionary
1factorial
adjective fac·to·ri·al \fak-ˈtȯr-ē-əl\
Definition of FACTORIAL
: of, relating to, or being a factor or a factorial
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First Known Use of FACTORIAL
1837
2factorial
noun
Definition of FACTORIAL
1
: the product of all the positive integers from 1 to n —symbol n!
2
: the quantity 0! arbitrarily defined as equal to 1
See factorial defined for kids First Known Use of FACTORIAL
1869
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